I hope this problem will be fixed without needing to change the language settings, because I always need to use chinese language in some non-unicode programs.
Or is there other way to fix it?

OK, now I know it's something to do with the regional and language, but I hope it will be fixed so that we don't have to adjust the language settings.

I can't open the drg file, after clicking "Accept", I get this:

An untrapped error occured roughly before getting computer name



Error number: 6.

Error description: Overflow.

Error source: IDoser.