When I try to create a dat file in profiler, I get the error:
Found an incomplete datfile or a bad exe-output!
If you're using a datfile, check if it's a valid one.
If you're using an exe-file, test if it's supported, free more disk space, remove pif-files and try again.

What does this mean????

Also what is the command to output a dat file now, it used to be: mame -listxml|xml2info >mame.dat

Please help!

Update:

Ok for some reason it seems to work now ok, it was weird at first it didn't like it...