FormDesigner.exe Access violation

I am unable to start up LifeCycle Designer v8.0. I get the following error message.

Unhandled exception at 0x7832c655 in FormDesigner.exe: 0xC0000005: Access violation writing location 0x00000070

I am on a windows XP Professional machine (service pack 2). I have re-installed Adobe and repaired it. I have also installed all the updates to version 8.1.2. I have searched through the forum and have not found a problem like mine. Does anyone have an idea of how to solve the problem?

Thank you in advance for your time.