Upgrading to IA18 fixed my error on Windows 2000 (http://www.installaware.com/forum/viewtopic.php?f=2&t=9751) but now I am getting an error on Windows 2000 Server SP4.

When I run any of my installs on Windows Server 2000 SP4 I get the error message “Runtime error in install: Not enough storage is available to process this command.” - see image below. This problem may have existed with IA17, I hadn't tested the install on Windows 2000 Server at that point.
I added some message boxes at the beginning of my script but the error appears before the installer gets to them. My install is a single-file compressed exe.
Any ideas?
Thanks,
Sheri