Network Suite test not finding objects in store...

I've a network suite that is run on a remote test execute machine. It has the same access permissions to the stores that the regular test, but when it tries to do a compare against an object in the store, it comes up with the message: 'The file "X:\Test\TestComplete\[...]\UserMaintVal_1.tcObject" is not an Objects file'



I can browse to that location on the remote machine and access the file, so I'm not sure where the problem lies.