After installing the GW801 Windows client and then attempting to open the program, I get the following error:

Unable to load GWDTA1US.DLL language resource file.

Language resource file GWDTA1EN.DLL loaded.

Things work after OK-ing the message but how can I get rid of the message for good?

I actually renamed the GWDTA1EN.DLL to ~US~, which solves the open error, but I also get related messages in other places, like when I open the Security option under Tools and Options.