Hi, Using Pharo on Windows time to time i got "External Module not found" for LGitLibrary. Not sure if i'm hitting: https://github.com/pharo-project/pharo-launcher/issues/307 But this time the problem is not fixed. Other time after some trying to open the image in different way (PharoLaucher, from CommandLine, selecting Pharo.exe to open .image files, ..) the problem fixed itself. ExternalLibraryFunction(Object)>>error: ExternalLibraryFunction(Object)>>externalCallFailed ExternalLibraryFunction(ExternalFunction)>>invokeWithArguments: LGitLibrary>>libgit2_init FFICalloutAPI>>function:module: LGitLibrary(Object)>>ffiCall: LGitLibrary>>libgit2_init [ self libgit2_init. self recordInitializationSuccess ] in LGitLibrary>>initializeLibGit2 in Block: [ self libgit2_init.... BlockClosure>>on:do: LGitLibrary>>initializeLibGit2 LGitLibrary class>>startUp: ClassSessionHandler>>startup: [ :each | each startup: isImageStarting ] in WorkingSession>>runStartup: in Block: [ :each | each startup: isImageStarting ] [ aBlock value: each ] in [ :each | [ aBlock value: each ] on: Exception do: [ :error | self errorHandler handleError: error ] ] in WorkingSession>>runList:do: in Block: [ aBlock value: each ] BlockClosure>>on:do: [ :each | [ aBlock value: each ] on: Exception do: [ :error | self errorHandler handleError: error ] ] in WorkingSession>>runList:do: in Block: [ :each | ... Array(SequenceableCollection)>>do: WorkingSession>>runList:do: WorkingSession>>runStartup: WorkingSession>>start: SessionManager>>launchSnapshot:andQuit: [ isImageStarting := self launchSnapshot: save andQuit: quit. wait signal ] in SessionManager>>snapshot:andQuit: in Block: [ isImageStarting := self launchSnapshot: save and...etc... [ self value. Processor terminateActive ] in BlockClosure>>newProcess in Block: [ self value.... -- Sent from: http://forum.world.st/Pharo-Smalltalk-Users-f1310670.html