Why don't you try putting the following code outside (after) your select/case statement ...

if ingroup ( "\\server\scouting" )
use s: \\...
endif

Then - for this user that is a member of both the baseball and scouting groups will have their u: drive mapped in the case - and thier s: drive will be mapped outside of the case - then you can debug from there.

You might also want to check the value of @error after your ingroup() to see if that's being set to anything !

Shawn.