DAT extension issue

Hey guys!

When I wanted to reinstall gw, I have noticed that gw dat file changed it's original extension to mplayerc.dat (http://img406.imageshack.us/f/issuew.jpg/). As I understood, issue is causes by media player. So, I run Your Uninstaller!, CC cleaner, Registry Cure and few other uninstalling progs... However, it even didnt have impact on it... Is there way how to fix it???

Thanks all!

You can delete the file extension association in Folder Options.

It's not any sort of problem really. This is not an actual change to the file extension. This only means that .dat files (from any app) are "associated" with Media Player. Which means that, if you tried to open the .dat file, it would try to open in Media Player. This isn't something you're likely to do, since the file is used by gw.exe when you start GW.
You can, as Elliptic suggests, change the file association. This may have resulted, btw, from having the "-mce" command in your GW shortcut (which you can remove).

o guys! Thanks alot! -mce fixed it. Gw runs pretty well. I simply dont like when other progs take over my application in any possible way...