BillingTracker Support

Q: 
I have Windows XP Service Pack 2. When I go to install BillingTracker I get a message that says, "The system file is not suitable for running MS-DOS and Microsoft Windows applications."  or "c:\windows\system32\autoexec.nt. The 
system file is not suitable for runing MS DOS and Microsoft windows applications."


A: 
For some reason the installation of Service Pack 2 can cause a file called "AUTOEXEC.NT" to be corrupted or deleted. This file is part of the Windows 16-bit subsystem and usually lives in the system32 folder. 

What's happening when you get this error is that the setup for that program uses an installer which is a 16-bit program. Since the AUTOEXEC.NT file is missing, it can't run the install program. 

Not everyone who installs Service Pack 2 will have this problem, but some will.

Fortunately, you can fix the problem easily. There is a backup of the file living on your hard drive.

Double click "My Computer" then your hard drive (probably C drive) and open the "WINDOWS" folder. Open "SYSTEM32" and see if the "AUTOEXEC.NT" file is in there. Chances are it isn't. If it is, then it's probably corrupt. 

Arrow up or hit "Back" to return to the main WINDOWS folder. Go down to "Repair" and double click. You should find "autoexec.nt" and "config.nt" in there. Copy these files (Ctrl+C) then go back to SYSTEM32 and paste them there (Ctrl+V). It will ask you if you want to replace the old one—click "Yes". That's it.

Now try installing BillingTracker and it should work fine.