PROBLEM 

Operator gets a Message Window warning when trying to load TestStar II Classic (Figure 1):

The username/password that was entered is not validated to run Bad path/exe

Figure 1 -  MTS Login Window warning message

ANSWER

Locate and remove the files (APPL2.DB, UA2.DB and USER2.DB).  All of the files are located in the C:\TS\db directory.

After restarting the software, it will prompt for a new username and password.   Enter mts and mts.  After doing this it should upload firmware to the controller and reestablish communication.