Same image, another crash dump while resizing a window showing the result of on of the GtMondrianBasicExamples. Segmentation fault Wed Dec 6 11:06:43 2017 VM: 201707201942 https://github.com/OpenSmalltalk/opensmalltalk-vm.git $ Date: Thu Jul 20 12:42:21 2017 -0700 $ Plugins: 201707201942 https://github.com/OpenSmalltalk/opensmalltalk-vm.git $ C stack backtrace & registers: eax 0xffffffff ebx 0x00138c13 ecx 0x1ef52000 edx 0xffffffff edi 0xffffffff esi 0xffffffff ebp 0xbff2cc58 esp 0xbff2cc00 eip 0x0013a43d 0 Pharo 0x0013a43d copyBits + 6200 1 Pharo 0x00126460 reportStackState + 819 2 Pharo 0x001267e6 sigsegv + 163 3 libsystem_platform.dylib 0xa778202b _sigtramp + 43 4 ??? 0xffffffff 0x0 + 4294967295 5 Pharo 0x0013a9db primitiveCopyBits + 50 6 ??? 0x0646c258 0x0 + 105300568 7 Pharo 0x000a13ab interpret + 646 8 Pharo 0x001279d9 -[sqSqueakMainApplication runSqueak] + 476 9 Foundation 0x953897ec __NSFirePerformWithOrder + 432 10 CoreFoundation 0x9392a216 __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 22 11 CoreFoundation 0x9392a132 __CFRunLoopDoObservers + 498 12 CoreFoundation 0x9390d5ed __CFRunLoopRun + 1661 13 CoreFoundation 0x9390cc41 CFRunLoopRunSpecific + 641 14 CoreFoundation 0x9390c9aa CFRunLoopRunInMode + 122 15 HIToolbox 0x92f0dd3b RunCurrentEventLoopInMode + 321 16 HIToolbox 0x92f0d91f ReceiveNextEventCommon + 454 17 HIToolbox 0x92f0d73b _BlockUntilNextEventMatchingListInModeWithFilter + 71 18 AppKit 0x9136538d _DPSNextEvent + 2101 19 AppKit 0x91ad6c74 -[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 2859 20 AppKit 0x91ad6141 -[NSApplication(NSEvent) nextEventMatchingMask:untilDate:inMode:dequeue:] + 134 21 AppKit 0x9135a2e1 -[NSApplication run] + 763 22 AppKit 0x9132c2f2 NSApplicationMain + 1228 23 libdyld.dylib 0xa7502711 start + 1 Smalltalk stack dump: 0xbff3d93c M GrafPort>copyBits 0x66b2540: a(n) GrafPort 0xbff3d954 M GrafPort>image:at:sourceRect:rule: 0x66b2540: a(n) GrafPort 0xbff3d97c M FormCanvas>image:at:sourceRect:rule: 0x66b2528: a(n) FormCanvas 0xbff3d9ac I FormCanvas(Canvas)>drawImage:at:sourceRect: 0x66b2528: a(n) FormCanvas 0xbff3d9d8 I FormCanvas(Canvas)>drawImage:at: 0x66b2528: a(n) FormCanvas 0xbff3d9fc M [] in BlMorphicSpaceMorph>drawOn: 0x6603cf0: a(n) BlMorphicSpaceMorph 0xbff3da18 M FormCanvas>clipBy:during: 0x66b1910: a(n) FormCanvas 0xbff3da40 M [] in BlMorphicSpaceMorph>drawOn: 0x6603cf0: a(n) BlMorphicSpaceMorph 0xbff3da60 M BlockClosure>ensure: 0x66b2260: a(n) BlockClosure 0xbff3da84 M [] in Mutex>critical: 0x6609470: a(n) Mutex 0xbff3daa4 M [] in Semaphore>critical: 0x6610008: a(n) Semaphore 0xbff3dac4 M BlockClosure>ensure: 0x66b2370: a(n) BlockClosure 0xbff3dae4 M Semaphore>critical: 0x6610008: a(n) Semaphore 0xbff3db04 M Mutex>critical: 0x6609470: a(n) Mutex 0xbff3db24 M BlMorphicSpaceMorph>drawOn: 0x6603cf0: a(n) BlMorphicSpaceMorph 0xbff3db40 M FormCanvas(Canvas)>draw: 0x66b1910: a(n) FormCanvas 0xbff3db5c M FormCanvas(Canvas)>drawMorph: 0x66b1910: a(n) FormCanvas 0xbff3db7c M [] in BlMorphicSpaceMorph(Morph)>fullDrawOn: 0x6603cf0: a(n) BlMorphicSpaceMorph 0xbff3db94 M FormCanvas>roundCornersOf:in:during: 0x66b1910: a(n) FormCanvas 0xbff3dbb8 M FormCanvas(Canvas)>roundCornersOf:during: 0x66b1910: a(n) FormCanvas 0xbff3dbdc M [] in BlMorphicSpaceMorph(Morph)>fullDrawOn: 0x6603cf0: a(n) BlMorphicSpaceMorph 0xbff3dbf4 M BlockClosure>on:do: 0x66b1bc0: a(n) BlockClosure 0xbff3dc14 M BlMorphicSpaceMorph(Morph)>fullDrawOn: 0x6603cf0: a(n) BlMorphicSpaceMorph ⦠----- Cheers, Sean -- Sent from: http://forum.world.st/Pharo-Smalltalk-Developers-f1294837.html