https://bugs.winehq.org/show_bug.cgi?id=25857
--- Comment #31 from Paul Gofman gofmanp@gmail.com --- (In reply to Paul Gofman from comment #30)
It looks like your log file is empty (2 bytes in length). Probably it is due to the mistyped redirection, I suggest you use something like "WINDEDEBUG=+d3dx wine obse_loader.exe >& wine.txt"
It is also misspelled WINEDEBUG in both your message and my reply (I copypasted it from yours), the correct line is:
WINEDEBUG=+d3dx wine obse_loader.exe >& wine.txt