Introjucer fails to launch


Hello there.

I'm fairly new to JUCE and more specifically the INTROJUCER, but I managed to get it worked for a project a few weeks ago.

However, I haven't used it for some time, and I have installed various IDE, devices during this period, and now I can't launch the program.

I have re-compiled (with code blocks) with no problem, but I still get the same problem : I can find the INtrojucer running inside my task manager, but nothing opens. I'm using windows 8 (not 8.1 for now, looks too unstable to me), but I made some windows update recently.

Any idea from where it could come from ?

Thanks a lot.