Typically, this error indicates the presence of an MFC42.DLL with a version number lower than 6.00.8447.0.

1. Close Bundle-Track if it's open.
2. Run a search for the file MFC42.DLL.
   • If you find no such file, make sure that in Windows Explorer, the View options are set show all files (not to hide files with '.dll' extensions) and try again.
3. Check the version number of each file returned.
4. Rename any MFC42.DLL with a version number lower than 6.00.8447.0 so that Bundle-Track will not find it.

Try running Bundle-Track. If the error persists, and this is a new installation that has not yet successfully run, try running the Client install again.