http://bugs.winehq.org/show_bug.cgi?id=34180
--- Comment #4 from Austin English austinenglish@gmail.com 2013-07-31 21:18:26 CDT --- (In reply to comment #3)
Created attachment 45470 [details] log file for "wine ThunderbirdPortable.exe"
this is the log file output.txt
WINEDEBUG=+relay,+seh,+tid wine ThunderbirdPortable.exe >> /tmp/output.txt 2>&1
There's no need for a debug log, just whatever wine prints without setting WINEDEBUG.
wine: cannot find L"unix\media\12E8-3A6D_\thunderbird\ThunderbirdPortable\ThunderbirdPortable.exe"
Do you not have the Z:\ drive symlink?