diff --git a/src/TruffleSqueak-Core.package/Polyglot.class/class/signalPolyglotError.st b/src/TruffleSqueak-Core.package/Polyglot.class/class/signalPolyglotError.st
index 205d85382..917b6dfde 100644
--- a/src/TruffleSqueak-Core.package/Polyglot.class/class/signalPolyglotError.st
+++ b/src/TruffleSqueak-Core.package/Polyglot.class/class/signalPolyglotError.st
@@ -1,3 +1,6 @@
 helpers
 signalPolyglotError
-	self error: self primitiveLastError
\ No newline at end of file
+	| error |
+	error := self primitiveLastError.
+	error inspect.
+	self error: error asString
\ No newline at end of file
diff --git a/src/TruffleSqueak-Core.package/Polyglot.class/methodProperties.json b/src/TruffleSqueak-Core.package/Polyglot.class/methodProperties.json
index 71ddc3cdc..f94b35298 100644
--- a/src/TruffleSqueak-Core.package/Polyglot.class/methodProperties.json
+++ b/src/TruffleSqueak-Core.package/Polyglot.class/methodProperties.json
@@ -50,7 +50,7 @@
 		"primitiveIsPolyglotEvalAllowed" : "fn 1/5/2020 16:58",
 		"primitiveLastError" : "fn 10/2/2019 09:09",
 		"setUpPolyglotEnvironment" : "fn 1/24/2020 14:41",
-		"signalPolyglotError" : "fn 4/13/2019 14:08",
+		"signalPolyglotError" : "fn 6/10/2021 16:15",
 		"startUp:" : "fn 1/24/2020 14:41" },
 	"instance" : {
 		 } }
diff --git a/src/TruffleSqueak-Tools-Core.package/PolyglotInspector.class/instance/exceptionInfoFor..st b/src/TruffleSqueak-Tools-Core.package/PolyglotInspector.class/instance/exceptionInfoFor..st
new file mode 100644
index 000000000..884fb25a9
--- /dev/null
+++ b/src/TruffleSqueak-Tools-Core.package/PolyglotInspector.class/instance/exceptionInfoFor..st
@@ -0,0 +1,21 @@
+helpers
+exceptionInfoFor: anInteropException
+	^ 'Message:	{1}
+Cause:		{2}
+Type:		{3}
+
+Stack trace:
+- {4}' format: {
+	(Interop hasExceptionMessage: anInteropException)
+		ifFalse: [ 'n/a' ]
+		ifTrue: [ Interop getExceptionMessage: anInteropException ].
+	(Interop hasExceptionCause: anInteropException)
+		ifFalse: [ 'n/a' ]
+		ifTrue: [ Interop getExceptionCause: anInteropException ].
+	Interop getExceptionType: anInteropException.
+	(Interop hasExceptionStackTrace: anInteropException)
+		ifFalse: [ 'n/a' ]
+		ifTrue: [ ((Interop getExceptionStackTrace: anInteropException) asCollection
+					collect: [ :ea | ((Interop hasExecutableName: ea)
+									ifTrue: [ (Interop getExecutableName: ea) ]
+									ifFalse: [ ea ]) asString ]) joinSeparatedBy: String cr, '- ' ] }
\ No newline at end of file
diff --git a/src/TruffleSqueak-Tools-Core.package/PolyglotInspector.class/instance/fieldException.st b/src/TruffleSqueak-Tools-Core.package/PolyglotInspector.class/instance/fieldException.st
new file mode 100644
index 000000000..9fadbd97b
--- /dev/null
+++ b/src/TruffleSqueak-Tools-Core.package/PolyglotInspector.class/instance/fieldException.st
@@ -0,0 +1,7 @@
+fields
+fieldException
+
+	^ (self newFieldForType: #misc key: #exception)
+		name: 'language info'; emphasizeName;
+		valueGetter: [ :o | self exceptionInfoFor: o ]; printValueAsIs;
+		yourself
\ No newline at end of file
diff --git a/src/TruffleSqueak-Tools-Core.package/PolyglotInspector.class/instance/fieldLanguageInfo.st b/src/TruffleSqueak-Tools-Core.package/PolyglotInspector.class/instance/fieldLanguageInfo.st
index 90699d427..12d31b15e 100644
--- a/src/TruffleSqueak-Tools-Core.package/PolyglotInspector.class/instance/fieldLanguageInfo.st
+++ b/src/TruffleSqueak-Tools-Core.package/PolyglotInspector.class/instance/fieldLanguageInfo.st
@@ -3,6 +3,6 @@ fieldLanguageInfo
 
 	^ (self newFieldForType: #misc key: #language)
 		name: 'language info'; emphasizeName;
-		valueGetter: [ :o | self getLanguageInfo: o ]; printValueAsIs;
+		valueGetter: [ :o | self languageInfoFor: o ]; printValueAsIs;
 		valueGetterExpression: 'Interop getLanguageInfo: self';
 		yourself
\ No newline at end of file
diff --git a/src/TruffleSqueak-Tools-Core.package/PolyglotInspector.class/instance/getLanguageInfo..st b/src/TruffleSqueak-Tools-Core.package/PolyglotInspector.class/instance/languageInfoFor..st
similarity index 93%
rename from src/TruffleSqueak-Tools-Core.package/PolyglotInspector.class/instance/getLanguageInfo..st
rename to src/TruffleSqueak-Tools-Core.package/PolyglotInspector.class/instance/languageInfoFor..st
index 7920f2b9b..800d4aea2 100644
--- a/src/TruffleSqueak-Tools-Core.package/PolyglotInspector.class/instance/getLanguageInfo..st
+++ b/src/TruffleSqueak-Tools-Core.package/PolyglotInspector.class/instance/languageInfoFor..st
@@ -1,5 +1,5 @@
 helpers
-getLanguageInfo: anObject
+languageInfoFor: anObject
 	| info |
 	info := (Interop getLanguageInfo: anObject).
 	^ 'Name:				{1}
diff --git a/src/TruffleSqueak-Tools-Core.package/PolyglotInspector.class/instance/streamOptionalFieldsOn..st b/src/TruffleSqueak-Tools-Core.package/PolyglotInspector.class/instance/streamOptionalFieldsOn..st
index 191c5d994..ee90b58ef 100644
--- a/src/TruffleSqueak-Tools-Core.package/PolyglotInspector.class/instance/streamOptionalFieldsOn..st
+++ b/src/TruffleSqueak-Tools-Core.package/PolyglotInspector.class/instance/streamOptionalFieldsOn..st
@@ -11,5 +11,7 @@ streamOptionalFieldsOn: aStream
 		aStream nextPut: self fieldLanguageInfo ].
 	(Interop hasSourceLocation: self object) ifTrue: [
 		aStream nextPut: self fieldSource ].
+	(Interop isException: self object) ifTrue: [
+		aStream nextPut: self fieldException ].
 	(Interop hasMembers: self object) ifTrue: [
 		aStream nextPutAll: self fieldsMembers ].
\ No newline at end of file
diff --git a/src/TruffleSqueak-Tools-Core.package/PolyglotInspector.class/methodProperties.json b/src/TruffleSqueak-Tools-Core.package/PolyglotInspector.class/methodProperties.json
index 783666e06..473c5f5a1 100644
--- a/src/TruffleSqueak-Tools-Core.package/PolyglotInspector.class/methodProperties.json
+++ b/src/TruffleSqueak-Tools-Core.package/PolyglotInspector.class/methodProperties.json
@@ -3,20 +3,22 @@
 		 },
 	"instance" : {
 		"aboutToStyle:" : "fn 12/5/2018 19:14",
-		"fieldLanguageInfo" : "fn 4/11/2021 15:02",
+		"exceptionInfoFor:" : "fn 6/10/2021 17:15",
+		"fieldException" : "fn 6/10/2021 16:48",
+		"fieldLanguageInfo" : "fn 6/10/2021 16:48",
 		"fieldMetaName" : "fn 4/11/2021 15:02",
 		"fieldMetaObject" : "fn 4/11/2021 15:01",
 		"fieldMetaObjectInfo" : "fn 4/11/2021 15:02",
 		"fieldSource" : "fn 4/11/2021 15:02",
 		"fieldsMembers" : "fn 4/11/2021 15:02",
-		"getLanguageInfo:" : "fn 2/12/2021 10:27",
 		"initialExtent" : "fn 2/12/2021 10:35",
 		"inspect:" : "fn 11/21/2019 15:47",
 		"inspectAs:" : "fn 1/26/2021 16:04",
 		"inspectVMObject" : "fn 3/29/2021 16:40",
 		"labelString" : "fn 2/11/2021 12:28",
+		"languageInfoFor:" : "fn 6/10/2021 16:47",
 		"mainFieldListMenu:" : "fn 3/29/2021 16:39",
 		"streamArrayElementsOn:" : "fn 4/11/2021 15:03",
 		"streamBaseFieldsOn:" : "fn 2/11/2021 11:01",
 		"streamFieldsOn:" : "fn 2/11/2021 11:49",
-		"streamOptionalFieldsOn:" : "fn 2/19/2021 13:36" } }
+		"streamOptionalFieldsOn:" : "fn 6/10/2021 16:46" } }