Hi Thierry, all, you were right, it was not so complicated to write my own version for calling an external program based on your Github code. It worked fine on Pharo3+4 but on Pharo5 there are the locking problems described, also in your code.
Until there is a decision if supporting windows in OSSubprocess or not and until the locking problem is not solved, I go back to Pharo4. (I loose to much time which I don't have). I will miss the code critics :-) Thank you all for your help. Regards Sabine -- View this message in context: http://forum.world.st/OSProcess-command-non-responding-image-when-calling-often-tp4899540p4899816.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.