I'll direct JC here when I see him and see if he knows what's up.
In the meantime try going to
http://www.WeiDU.org and downloading the latest version of WeiDU (164 or something).
Unzip and you will find in the package a program called WeiDU.exe.
In your BGII folder there will be a similar program called setup-banterpack.exe or something; the thing you are clicking on to install.
Delete it, copy WeiDU.exe to your BGII folder, and rename that setup-banterpack.exe (or setup-banterpacks.exe or just banterpack.exe; whatever the original thing was called). [img]smile.gif[/img]