Technical Support - Frequently Asked Questions
Installation Problem - Windows XP SP2

Problem: After updating to Windows XP Service Pack 2 when I go to install an Ontar software program I get a message that says "C:\WINDOWS\SYSTEM32\AUTOEXEC.NT.  The system file is not suitable for running MS-DOS and MICROSOFT WINDOWS applications" and installation stops.
Explanation: This is a known problem with XP SP2. Apparently XP SP2 corrupts or deletes several files including "autoexec.nt" and "config.nt" which are needed to run MS-DOS and 16-bit Windows programs. Since Ontar uses a 16-bit version of InstallShield (to be compatible with Win98), users may encounter this problem. Many other software companies are reporting the same problem.
Resolution: Please do the following:
  1. From My Computer or Windows Explorer, go to your Windows\System32 directory (probably "C:\Windows\system32") and see if the files "autoexec.nt" and "config.nt" exist. If they do, you should back them up (either copy them elsewhere or rename them).
  2. Go to your Windows\Repair directory (probably "C:\Windows\Repair") and copy the files "autoexec.nt" and "config.nt".
  3. Paste those files into your "C:\Windows\System32" directory.
  4. Try installing again (i.e. run "Setup.exe" from the CD or DVD).
Additional Information: Microsoft has a support article dealing with this issue at;en-us;324767&Product=winxp.

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