I've been running several old 16 bit applications (eg Lotus Organizer 2.1) on my XP Pro SP2 system successfully for more than 2 years. These applications and the command.com Start/Run command worked equally well within both Admin User accounts and Restricted User accounts.
In March 2010, I upgraded to SP3. Since then these same 16 bit applications and command.com only work in Admin User accounts. They fail to start in Restricted User accounts. Instead I get the popup Windows message:
A temporary file needed for initialization could not be created or could not be written to. Make sure the directory path exists, and disk space is available.
I reserve my Admin User accounts for maintenance only usage, so I would like to resolve this problem.
It seems that the solution could be a setting somewhere, but so far I've been unable to locate it. Suggestions welcomed!