http://bugs.winehq.org/show_bug.cgi?id=10490
--- Comment #2 from Austin English austinenglish@gmail.com 2007-11-18 05:09:36 --- 'heb@rutan:~/.wine/drive_c$ wine Programme/Dassault\ Systemes/B17/intel_a/code/bin/CNEXT.exe'
Don't run your programs this way. Try:
$ cd ~/.wine/drive_c/Programme/Dassault\ Systemes/B17/intel_a/code/bin/ $ wine CNEXT.exe