Launching fails in Windows resolved. Changed PhLImage>>Launch from 'changing directory before using a relative pathname for target image' to 'using the absolute pathname for target image'.  Current-working-directory of target image should be unaffected.
MODIFY
src/Pharo-Launcher-Core.package/PhLImage.class/instance/launch.st
src/Pharo-Launcher-Core.package/PhLImage.class/instance/launch.st
action
launch
"Use the VM that launched the current image to launch me"
- | cdCommand vmCommand |
- cdCommand := 'cd ' , file parent pathString.
- vmCommand := Smalltalk vm fullPath asString , ' ' , file basename.
- OSProcess command: cdCommand , ' && ' , vmCommand
\ No newline at end of file
+ | vmCommand imagePath |
+ vmCommand := Smalltalk vm fullPath asString .
+ imagePath := (file parent / file basename) pathString .
+ OSProcess command: vmCommand , ' ' , imagePath.
\ No newline at end of file

https://pharo.fogbugz.com/default.asp?11616 
Launching fails in Windows resolved. Changed PhLImage>>Launch from 'changing directory before using a relative pathname for target image' to 'using the absolute pathname for target image'.  Current-working-directory of target image should be unaffected.