[Pharo-dev] Test Runner: Walkback when storing result as progress reference

I just tripped over a walkback when clicking on the menu item „Store result as progress reference“ in the Test Runner after having run all tests in a Pharo 6.1 (stable) image created by PharoLauncher 1.0.1 on macOS Sierra 10.12.6. Has anyone seen this before? Cheers, Bernhard OpalEncoderForV3PlusClosures(Object)>>error: OpalEncoderForV3PlusClosures(OpalBytecodeEncoder)>>outOfRangeError:index:range:to: OpalEncoderForV3PlusClosures(OpalEncoderForV3)>>genPushLiteral: IRBytecodeGenerator>>pushLiteral: IRTranslatorV2>>visitPushLiteral: IRPushLiteral>>accept: IRTranslatorV2(IRVisitor)>>visitNode: IRTranslatorV2>>visitInstruction: [ :instr | self visitInstruction: instr ] in IRTranslatorV2(IRVisitor)>>visitSequence: in Block: [ :instr | self visitInstruction: instr ] OrderedCollection>>do: IRSequence>>do: IRTranslatorV2(IRVisitor)>>visitSequence: IRTranslatorV2>>visitSequence: IRSequence>>accept: IRTranslatorV2(IRVisitor)>>visitNode: [ :each | self visitNode: each ] in IRTranslatorV2(IRVisitor)>>visitNodes: in Block: [ :each | self visitNode: each ] SortedCollection(OrderedCollection)>>do: IRTranslatorV2(IRVisitor)>>visitNodes: IRTranslatorV2>>visitSequences: IRTranslatorV2>>visitMethod: IRMethod>>accept: IRTranslatorV2(IRVisitor)>>visitNode: IRMethod>>generate: IRMethod>>compiledMethodWith: RBMethodNode>>generate: [ [ ast := self parse. self doSemanticAnalysis. self callPlugins ] on: OCSourceCodeChanged do: [ :notification | self source: notification newSourceCode. notification retry ]. cm := ast generate: self compilationContext compiledMethodTrailer ] in OpalCompiler>>compile in Block: [ [ ast := self parse.... BlockClosure>>on:do: OpalCompiler>>compile Metaclass(ClassDescription)>>compile:classified:withStamp:notifying:logSource: Metaclass(ClassDescription)>>compile:classified:withStamp:notifying: