diff --git a/com.ibm.wala.cast.java/.settings/org.eclipse.jdt.core.prefs b/com.ibm.wala.cast.java/.settings/org.eclipse.jdt.core.prefs
index c83be671d..64a032821 100644
--- a/com.ibm.wala.cast.java/.settings/org.eclipse.jdt.core.prefs
+++ b/com.ibm.wala.cast.java/.settings/org.eclipse.jdt.core.prefs
@@ -111,7 +111,7 @@ org.eclipse.jdt.core.compiler.problem.unusedImport=error
 org.eclipse.jdt.core.compiler.problem.unusedLabel=error
 org.eclipse.jdt.core.compiler.problem.unusedLocal=error
 org.eclipse.jdt.core.compiler.problem.unusedObjectAllocation=error
-org.eclipse.jdt.core.compiler.problem.unusedParameter=warning
+org.eclipse.jdt.core.compiler.problem.unusedParameter=error
 org.eclipse.jdt.core.compiler.problem.unusedParameterIncludeDocCommentReference=enabled
 org.eclipse.jdt.core.compiler.problem.unusedParameterWhenImplementingAbstract=disabled
 org.eclipse.jdt.core.compiler.problem.unusedParameterWhenOverridingConcrete=disabled
diff --git a/com.ibm.wala.cast.js.rhino.test/.settings/org.eclipse.jdt.core.prefs b/com.ibm.wala.cast.js.rhino.test/.settings/org.eclipse.jdt.core.prefs
index 3c46997d2..194c91e0d 100644
--- a/com.ibm.wala.cast.js.rhino.test/.settings/org.eclipse.jdt.core.prefs
+++ b/com.ibm.wala.cast.js.rhino.test/.settings/org.eclipse.jdt.core.prefs
@@ -111,7 +111,7 @@ org.eclipse.jdt.core.compiler.problem.unusedImport=error
 org.eclipse.jdt.core.compiler.problem.unusedLabel=error
 org.eclipse.jdt.core.compiler.problem.unusedLocal=warning
 org.eclipse.jdt.core.compiler.problem.unusedObjectAllocation=error
-org.eclipse.jdt.core.compiler.problem.unusedParameter=warning
+org.eclipse.jdt.core.compiler.problem.unusedParameter=error
 org.eclipse.jdt.core.compiler.problem.unusedParameterIncludeDocCommentReference=enabled
 org.eclipse.jdt.core.compiler.problem.unusedParameterWhenImplementingAbstract=disabled
 org.eclipse.jdt.core.compiler.problem.unusedParameterWhenOverridingConcrete=disabled
diff --git a/com.ibm.wala.cast.js/.settings/org.eclipse.jdt.core.prefs b/com.ibm.wala.cast.js/.settings/org.eclipse.jdt.core.prefs
index 2fe729927..91565e151 100644
--- a/com.ibm.wala.cast.js/.settings/org.eclipse.jdt.core.prefs
+++ b/com.ibm.wala.cast.js/.settings/org.eclipse.jdt.core.prefs
@@ -86,7 +86,7 @@ org.eclipse.jdt.core.compiler.problem.reportMethodCanBePotentiallyStatic=ignore
 org.eclipse.jdt.core.compiler.problem.reportMethodCanBeStatic=error
 org.eclipse.jdt.core.compiler.problem.specialParameterHidingField=disabled
 org.eclipse.jdt.core.compiler.problem.staticAccessReceiver=error
-org.eclipse.jdt.core.compiler.problem.suppressOptionalErrors=disabled
+org.eclipse.jdt.core.compiler.problem.suppressOptionalErrors=enabled
 org.eclipse.jdt.core.compiler.problem.suppressWarnings=enabled
 org.eclipse.jdt.core.compiler.problem.syntacticNullAnalysisForFields=enabled
 org.eclipse.jdt.core.compiler.problem.syntheticAccessEmulation=ignore
@@ -111,7 +111,7 @@ org.eclipse.jdt.core.compiler.problem.unusedImport=error
 org.eclipse.jdt.core.compiler.problem.unusedLabel=error
 org.eclipse.jdt.core.compiler.problem.unusedLocal=error
 org.eclipse.jdt.core.compiler.problem.unusedObjectAllocation=ignore
-org.eclipse.jdt.core.compiler.problem.unusedParameter=warning
+org.eclipse.jdt.core.compiler.problem.unusedParameter=error
 org.eclipse.jdt.core.compiler.problem.unusedParameterIncludeDocCommentReference=enabled
 org.eclipse.jdt.core.compiler.problem.unusedParameterWhenImplementingAbstract=disabled
 org.eclipse.jdt.core.compiler.problem.unusedParameterWhenOverridingConcrete=disabled
diff --git a/com.ibm.wala.cast/.settings/org.eclipse.jdt.core.prefs b/com.ibm.wala.cast/.settings/org.eclipse.jdt.core.prefs
index 88b0b5de8..eff65c460 100644
--- a/com.ibm.wala.cast/.settings/org.eclipse.jdt.core.prefs
+++ b/com.ibm.wala.cast/.settings/org.eclipse.jdt.core.prefs
@@ -87,7 +87,7 @@ org.eclipse.jdt.core.compiler.problem.reportMethodCanBePotentiallyStatic=ignore
 org.eclipse.jdt.core.compiler.problem.reportMethodCanBeStatic=error
 org.eclipse.jdt.core.compiler.problem.specialParameterHidingField=disabled
 org.eclipse.jdt.core.compiler.problem.staticAccessReceiver=error
-org.eclipse.jdt.core.compiler.problem.suppressOptionalErrors=disabled
+org.eclipse.jdt.core.compiler.problem.suppressOptionalErrors=enabled
 org.eclipse.jdt.core.compiler.problem.suppressWarnings=enabled
 org.eclipse.jdt.core.compiler.problem.syntacticNullAnalysisForFields=enabled
 org.eclipse.jdt.core.compiler.problem.syntheticAccessEmulation=ignore
@@ -112,7 +112,7 @@ org.eclipse.jdt.core.compiler.problem.unusedImport=error
 org.eclipse.jdt.core.compiler.problem.unusedLabel=error
 org.eclipse.jdt.core.compiler.problem.unusedLocal=error
 org.eclipse.jdt.core.compiler.problem.unusedObjectAllocation=error
-org.eclipse.jdt.core.compiler.problem.unusedParameter=warning
+org.eclipse.jdt.core.compiler.problem.unusedParameter=error
 org.eclipse.jdt.core.compiler.problem.unusedParameterIncludeDocCommentReference=enabled
 org.eclipse.jdt.core.compiler.problem.unusedParameterWhenImplementingAbstract=disabled
 org.eclipse.jdt.core.compiler.problem.unusedParameterWhenOverridingConcrete=disabled
diff --git a/com.ibm.wala.core.tests/.settings/org.eclipse.jdt.core.prefs b/com.ibm.wala.core.tests/.settings/org.eclipse.jdt.core.prefs
index 03e05e77a..c75d1dc2b 100644
--- a/com.ibm.wala.core.tests/.settings/org.eclipse.jdt.core.prefs
+++ b/com.ibm.wala.core.tests/.settings/org.eclipse.jdt.core.prefs
@@ -111,7 +111,7 @@ org.eclipse.jdt.core.compiler.problem.unusedImport=error
 org.eclipse.jdt.core.compiler.problem.unusedLabel=error
 org.eclipse.jdt.core.compiler.problem.unusedLocal=warning
 org.eclipse.jdt.core.compiler.problem.unusedObjectAllocation=error
-org.eclipse.jdt.core.compiler.problem.unusedParameter=warning
+org.eclipse.jdt.core.compiler.problem.unusedParameter=error
 org.eclipse.jdt.core.compiler.problem.unusedParameterIncludeDocCommentReference=enabled
 org.eclipse.jdt.core.compiler.problem.unusedParameterWhenImplementingAbstract=disabled
 org.eclipse.jdt.core.compiler.problem.unusedParameterWhenOverridingConcrete=disabled
diff --git a/com.ibm.wala.core/.settings/org.eclipse.jdt.core.prefs b/com.ibm.wala.core/.settings/org.eclipse.jdt.core.prefs
index c09f297fa..5d2827075 100644
--- a/com.ibm.wala.core/.settings/org.eclipse.jdt.core.prefs
+++ b/com.ibm.wala.core/.settings/org.eclipse.jdt.core.prefs
@@ -96,7 +96,7 @@ org.eclipse.jdt.core.compiler.problem.reportMethodCanBePotentiallyStatic=ignore
 org.eclipse.jdt.core.compiler.problem.reportMethodCanBeStatic=error
 org.eclipse.jdt.core.compiler.problem.specialParameterHidingField=disabled
 org.eclipse.jdt.core.compiler.problem.staticAccessReceiver=error
-org.eclipse.jdt.core.compiler.problem.suppressOptionalErrors=disabled
+org.eclipse.jdt.core.compiler.problem.suppressOptionalErrors=enabled
 org.eclipse.jdt.core.compiler.problem.suppressWarnings=enabled
 org.eclipse.jdt.core.compiler.problem.syntacticNullAnalysisForFields=disabled
 org.eclipse.jdt.core.compiler.problem.syntheticAccessEmulation=ignore
@@ -121,7 +121,7 @@ org.eclipse.jdt.core.compiler.problem.unusedImport=error
 org.eclipse.jdt.core.compiler.problem.unusedLabel=error
 org.eclipse.jdt.core.compiler.problem.unusedLocal=warning
 org.eclipse.jdt.core.compiler.problem.unusedObjectAllocation=ignore
-org.eclipse.jdt.core.compiler.problem.unusedParameter=warning
+org.eclipse.jdt.core.compiler.problem.unusedParameter=error
 org.eclipse.jdt.core.compiler.problem.unusedParameterIncludeDocCommentReference=enabled
 org.eclipse.jdt.core.compiler.problem.unusedParameterWhenImplementingAbstract=disabled
 org.eclipse.jdt.core.compiler.problem.unusedParameterWhenOverridingConcrete=disabled
diff --git a/com.ibm.wala.dalvik/.settings/org.eclipse.jdt.core.prefs b/com.ibm.wala.dalvik/.settings/org.eclipse.jdt.core.prefs
index 5758d3d5f..61ec488bc 100644
--- a/com.ibm.wala.dalvik/.settings/org.eclipse.jdt.core.prefs
+++ b/com.ibm.wala.dalvik/.settings/org.eclipse.jdt.core.prefs
@@ -87,7 +87,7 @@ org.eclipse.jdt.core.compiler.problem.reportMethodCanBePotentiallyStatic=ignore
 org.eclipse.jdt.core.compiler.problem.reportMethodCanBeStatic=error
 org.eclipse.jdt.core.compiler.problem.specialParameterHidingField=disabled
 org.eclipse.jdt.core.compiler.problem.staticAccessReceiver=error
-org.eclipse.jdt.core.compiler.problem.suppressOptionalErrors=disabled
+org.eclipse.jdt.core.compiler.problem.suppressOptionalErrors=enabled
 org.eclipse.jdt.core.compiler.problem.suppressWarnings=enabled
 org.eclipse.jdt.core.compiler.problem.syntacticNullAnalysisForFields=enabled
 org.eclipse.jdt.core.compiler.problem.syntheticAccessEmulation=ignore
@@ -112,7 +112,7 @@ org.eclipse.jdt.core.compiler.problem.unusedImport=error
 org.eclipse.jdt.core.compiler.problem.unusedLabel=error
 org.eclipse.jdt.core.compiler.problem.unusedLocal=warning
 org.eclipse.jdt.core.compiler.problem.unusedObjectAllocation=error
-org.eclipse.jdt.core.compiler.problem.unusedParameter=warning
+org.eclipse.jdt.core.compiler.problem.unusedParameter=error
 org.eclipse.jdt.core.compiler.problem.unusedParameterIncludeDocCommentReference=enabled
 org.eclipse.jdt.core.compiler.problem.unusedParameterWhenImplementingAbstract=disabled
 org.eclipse.jdt.core.compiler.problem.unusedParameterWhenOverridingConcrete=disabled
diff --git a/com.ibm.wala.ide.jdt.test/.settings/org.eclipse.jdt.core.prefs b/com.ibm.wala.ide.jdt.test/.settings/org.eclipse.jdt.core.prefs
index 82ae1ab08..f11288562 100644
--- a/com.ibm.wala.ide.jdt.test/.settings/org.eclipse.jdt.core.prefs
+++ b/com.ibm.wala.ide.jdt.test/.settings/org.eclipse.jdt.core.prefs
@@ -87,7 +87,7 @@ org.eclipse.jdt.core.compiler.problem.reportMethodCanBePotentiallyStatic=error
 org.eclipse.jdt.core.compiler.problem.reportMethodCanBeStatic=error
 org.eclipse.jdt.core.compiler.problem.specialParameterHidingField=disabled
 org.eclipse.jdt.core.compiler.problem.staticAccessReceiver=error
-org.eclipse.jdt.core.compiler.problem.suppressOptionalErrors=disabled
+org.eclipse.jdt.core.compiler.problem.suppressOptionalErrors=enabled
 org.eclipse.jdt.core.compiler.problem.suppressWarnings=enabled
 org.eclipse.jdt.core.compiler.problem.syntacticNullAnalysisForFields=enabled
 org.eclipse.jdt.core.compiler.problem.syntheticAccessEmulation=ignore
@@ -112,7 +112,7 @@ org.eclipse.jdt.core.compiler.problem.unusedImport=error
 org.eclipse.jdt.core.compiler.problem.unusedLabel=error
 org.eclipse.jdt.core.compiler.problem.unusedLocal=error
 org.eclipse.jdt.core.compiler.problem.unusedObjectAllocation=error
-org.eclipse.jdt.core.compiler.problem.unusedParameter=warning
+org.eclipse.jdt.core.compiler.problem.unusedParameter=error
 org.eclipse.jdt.core.compiler.problem.unusedParameterIncludeDocCommentReference=enabled
 org.eclipse.jdt.core.compiler.problem.unusedParameterWhenImplementingAbstract=disabled
 org.eclipse.jdt.core.compiler.problem.unusedParameterWhenOverridingConcrete=disabled
diff --git a/com.ibm.wala.ide/.settings/org.eclipse.jdt.core.prefs b/com.ibm.wala.ide/.settings/org.eclipse.jdt.core.prefs
index bec5f9aa1..6964991ec 100644
--- a/com.ibm.wala.ide/.settings/org.eclipse.jdt.core.prefs
+++ b/com.ibm.wala.ide/.settings/org.eclipse.jdt.core.prefs
@@ -86,7 +86,7 @@ org.eclipse.jdt.core.compiler.problem.reportMethodCanBePotentiallyStatic=ignore
 org.eclipse.jdt.core.compiler.problem.reportMethodCanBeStatic=error
 org.eclipse.jdt.core.compiler.problem.specialParameterHidingField=disabled
 org.eclipse.jdt.core.compiler.problem.staticAccessReceiver=error
-org.eclipse.jdt.core.compiler.problem.suppressOptionalErrors=disabled
+org.eclipse.jdt.core.compiler.problem.suppressOptionalErrors=enabled
 org.eclipse.jdt.core.compiler.problem.suppressWarnings=enabled
 org.eclipse.jdt.core.compiler.problem.syntacticNullAnalysisForFields=enabled
 org.eclipse.jdt.core.compiler.problem.syntheticAccessEmulation=ignore
@@ -111,7 +111,7 @@ org.eclipse.jdt.core.compiler.problem.unusedImport=error
 org.eclipse.jdt.core.compiler.problem.unusedLabel=error
 org.eclipse.jdt.core.compiler.problem.unusedLocal=error
 org.eclipse.jdt.core.compiler.problem.unusedObjectAllocation=error
-org.eclipse.jdt.core.compiler.problem.unusedParameter=warning
+org.eclipse.jdt.core.compiler.problem.unusedParameter=error
 org.eclipse.jdt.core.compiler.problem.unusedParameterIncludeDocCommentReference=enabled
 org.eclipse.jdt.core.compiler.problem.unusedParameterWhenImplementingAbstract=disabled
 org.eclipse.jdt.core.compiler.problem.unusedParameterWhenOverridingConcrete=disabled
diff --git a/com.ibm.wala.scandroid/.settings/org.eclipse.jdt.core.prefs b/com.ibm.wala.scandroid/.settings/org.eclipse.jdt.core.prefs
index 478a7f000..d9bd91b49 100644
--- a/com.ibm.wala.scandroid/.settings/org.eclipse.jdt.core.prefs
+++ b/com.ibm.wala.scandroid/.settings/org.eclipse.jdt.core.prefs
@@ -72,7 +72,7 @@ org.eclipse.jdt.core.compiler.problem.reportMethodCanBePotentiallyStatic=ignore
 org.eclipse.jdt.core.compiler.problem.reportMethodCanBeStatic=error
 org.eclipse.jdt.core.compiler.problem.specialParameterHidingField=disabled
 org.eclipse.jdt.core.compiler.problem.staticAccessReceiver=warning
-org.eclipse.jdt.core.compiler.problem.suppressOptionalErrors=disabled
+org.eclipse.jdt.core.compiler.problem.suppressOptionalErrors=enabled
 org.eclipse.jdt.core.compiler.problem.suppressWarnings=enabled
 org.eclipse.jdt.core.compiler.problem.syntacticNullAnalysisForFields=enabled
 org.eclipse.jdt.core.compiler.problem.syntheticAccessEmulation=ignore
@@ -97,7 +97,7 @@ org.eclipse.jdt.core.compiler.problem.unusedImport=error
 org.eclipse.jdt.core.compiler.problem.unusedLabel=error
 org.eclipse.jdt.core.compiler.problem.unusedLocal=error
 org.eclipse.jdt.core.compiler.problem.unusedObjectAllocation=error
-org.eclipse.jdt.core.compiler.problem.unusedParameter=warning
+org.eclipse.jdt.core.compiler.problem.unusedParameter=error
 org.eclipse.jdt.core.compiler.problem.unusedParameterIncludeDocCommentReference=enabled
 org.eclipse.jdt.core.compiler.problem.unusedParameterWhenImplementingAbstract=disabled
 org.eclipse.jdt.core.compiler.problem.unusedParameterWhenOverridingConcrete=disabled
diff --git a/com.ibm.wala.shrike/.settings/org.eclipse.jdt.core.prefs b/com.ibm.wala.shrike/.settings/org.eclipse.jdt.core.prefs
index 7d4d23051..753bc918a 100644
--- a/com.ibm.wala.shrike/.settings/org.eclipse.jdt.core.prefs
+++ b/com.ibm.wala.shrike/.settings/org.eclipse.jdt.core.prefs
@@ -96,7 +96,7 @@ org.eclipse.jdt.core.compiler.problem.reportMethodCanBePotentiallyStatic=ignore
 org.eclipse.jdt.core.compiler.problem.reportMethodCanBeStatic=error
 org.eclipse.jdt.core.compiler.problem.specialParameterHidingField=disabled
 org.eclipse.jdt.core.compiler.problem.staticAccessReceiver=error
-org.eclipse.jdt.core.compiler.problem.suppressOptionalErrors=disabled
+org.eclipse.jdt.core.compiler.problem.suppressOptionalErrors=enabled
 org.eclipse.jdt.core.compiler.problem.suppressWarnings=enabled
 org.eclipse.jdt.core.compiler.problem.syntacticNullAnalysisForFields=enabled
 org.eclipse.jdt.core.compiler.problem.syntheticAccessEmulation=ignore
@@ -121,7 +121,7 @@ org.eclipse.jdt.core.compiler.problem.unusedImport=error
 org.eclipse.jdt.core.compiler.problem.unusedLabel=error
 org.eclipse.jdt.core.compiler.problem.unusedLocal=warning
 org.eclipse.jdt.core.compiler.problem.unusedObjectAllocation=error
-org.eclipse.jdt.core.compiler.problem.unusedParameter=warning
+org.eclipse.jdt.core.compiler.problem.unusedParameter=error
 org.eclipse.jdt.core.compiler.problem.unusedParameterIncludeDocCommentReference=enabled
 org.eclipse.jdt.core.compiler.problem.unusedParameterWhenImplementingAbstract=disabled
 org.eclipse.jdt.core.compiler.problem.unusedParameterWhenOverridingConcrete=disabled
diff --git a/com.ibm.wala.util/.settings/org.eclipse.jdt.core.prefs b/com.ibm.wala.util/.settings/org.eclipse.jdt.core.prefs
index 06d4da0f2..689e1414e 100644
--- a/com.ibm.wala.util/.settings/org.eclipse.jdt.core.prefs
+++ b/com.ibm.wala.util/.settings/org.eclipse.jdt.core.prefs
@@ -86,7 +86,7 @@ org.eclipse.jdt.core.compiler.problem.reportMethodCanBePotentiallyStatic=ignore
 org.eclipse.jdt.core.compiler.problem.reportMethodCanBeStatic=error
 org.eclipse.jdt.core.compiler.problem.specialParameterHidingField=disabled
 org.eclipse.jdt.core.compiler.problem.staticAccessReceiver=error
-org.eclipse.jdt.core.compiler.problem.suppressOptionalErrors=disabled
+org.eclipse.jdt.core.compiler.problem.suppressOptionalErrors=enabled
 org.eclipse.jdt.core.compiler.problem.suppressWarnings=enabled
 org.eclipse.jdt.core.compiler.problem.syntacticNullAnalysisForFields=enabled
 org.eclipse.jdt.core.compiler.problem.syntheticAccessEmulation=ignore
@@ -111,7 +111,7 @@ org.eclipse.jdt.core.compiler.problem.unusedImport=error
 org.eclipse.jdt.core.compiler.problem.unusedLabel=error
 org.eclipse.jdt.core.compiler.problem.unusedLocal=error
 org.eclipse.jdt.core.compiler.problem.unusedObjectAllocation=error
-org.eclipse.jdt.core.compiler.problem.unusedParameter=warning
+org.eclipse.jdt.core.compiler.problem.unusedParameter=error
 org.eclipse.jdt.core.compiler.problem.unusedParameterIncludeDocCommentReference=enabled
 org.eclipse.jdt.core.compiler.problem.unusedParameterWhenImplementingAbstract=disabled
 org.eclipse.jdt.core.compiler.problem.unusedParameterWhenOverridingConcrete=disabled