Attached crash.dmp file ... running Ubuntu14.04 and here's a bit of Smalltalk stack: 0xffb7d03c I FreeTypeFace(FT2Face)>newFaceFromExternalMemory:index: 0xbc98a58: a(n) FreeTypeFace 0xffb7d064 I FreeTypeFace>create 0xbc98a58: a(n) FreeTypeFace 0xffb7d084 I FreeTypeFace>validate 0xbc98a58: a(n) FreeTypeFace 0xffb7d0a4 I FreeTypeFont>face 0xb86ade0: a(n) FreeTypeFont 0xffb7d0fc I FreeTypeSubPixelAntiAliasedGlyphRenderer>renderStretchedGlyph:depth:subpixelPosition:font: 0x9e2b218: a(n) FreeTypeSubPixelAntiAliasedGlyphRenderer 0xffb7d130 I FreeTypeSubPixelAntiAliasedGlyphRenderer>subGlyphOf:colorValue:mono:subpixelPosition:font: 0x9e2b218: a(n) FreeTypeSubPixelAntiAliasedGlyphRenderer ....snip.... 0xbceb0b8 s WorldMorph>displayWorld 0xbceb118 s [] in WorldState>displayWorldSafely: 0xbceb178 s BlockClosure>on:do: 0xbceb1d8 s BlockClosure>ifError: 0xbceb238 s WorldState>displayWorldSafely: 0xbceb298 s WorldState>doOneCycleNowFor: 0xbceb2f8 s WorldState>doOneCycleFor: 0xbceb358 s WorldMorph>doOneCycle 0xb95ca30 s [] in MorphicUIManager>spawnNewProcess 0xb767510 s [] in BlockClosure>newProcess vm/image combo dowloaded yesterday launches without errors, so I don't think it's my environment that is the source of the segfault ... I was doing a fresh build from a bash script and from the looks of the last couple of lines it looks like that there are new changes in this image from yesterday: "Postscript: Leave the line above, and replace the rest of this comment by a useful one. Executable statements should follow this comment, and should be separated by periods, with no exclamation points (!!). Be sure to put any further comments in double-quotes, like this one." |repository| repository := MCHttpRepository location: 'http://smalltalkhub.com/mc/Pharo/Pharo50/main' user: '' password: ''. (repository loadVersionFromFileNamed:'ScriptLoader50-EstebanLorenzano.975.mcz') load. ScriptLoader new update50761. ! ----End fileIn----! ----QUIT----2016-07-29T12:18:23.980837+02:00 Pharo.image priorSource: 215270! ----QUIT----2016-07-29T12:18:29.473484+02:00 Pharo.image priorSource: 234661! If you look at the bottom of the stack you will notice that WorldState>doOneCycle is being called and that's suspiciously similar to the issue I reported yesterday[1] ... but a segfault this time instead of an MNU.. I will go through the drill of trying to see which part of the script is hitting this problem and provide more info ... It would be nice to get a clean build sooner rather than later :) Dale [1] https://pharo.fogbugz.com/f/cases/18706#BugEvent.170987