Performa 6360 & 6400: Performa Demo and -108 Error (4/97)

I have a Performa 6360 & 6400 computer and have just upgraded my system software to 7.5.5. Now when I try to click the "Sign-Up with Apple" button in the Performa Demo, I get a blank dialog box with a -108.

What is this error and how can I avoid the problem?

The error is an out of memory error. It means that there is not enough memory to run both the Performa Demo and the "Sign-Up with Apple" application. The Performa Demo was designed to run with system software 7.5.3, Revision 2.2 on a Performa 6360 or 6400 computer with 16 MB of physical memory.  

After updating the system software to 7.5.5, the memory requirements for the system software increase slightly. This slight increase is enough to prevent both the Performa Demo and the "Sign-Up with Apple" application to run simultaneously. There are 2 workarounds that will allow Performa 6360/6400 users with 16 MB of memory and running system software 7.5.5 to avoid this -108 error. They are as follows:

1) Turn Virtual Memory on (set to 17 MB and restart the computer)
2) Install more physical memory than 16 MB
Published Date: Feb 18, 2012