http://bugs.winehq.org/show_bug.cgi?id=25738
--- Comment #2 from Xavier Vachon xvachon@gmail.com 2011-04-14 19:22:53 CDT --- Created an attachment (id=34119) --> (http://bugs.winehq.org/attachment.cgi?id=34119) backtrace
Not sure if this is exactly the same issue, but I get this when I try to run a patch bundle for Dragon Age 2. It works flawlessly in Windows 7.
wine: cannot find L"C:\windows\system32\copy.exe" File not found
wine: cannot find L"C:\windows\system32\del.exe" File not found
After applying your hack, the console complains only about copy.exe not being found.
Adding the backtrace, hopefully it's useful.