Big-Chuck

Thank you, you were absolutely correct. I just bought this computer and when windows 7 was setup on it I was setup as admin. Just added a new standard user on it and Houdini opens correctly. One to file in the memory bank, Thx again, much appreciated!!!

Below is the error message that keeps repeating in the Houdini Console box

Warning: CUsers/Big-Chuck/Documents/houdini11.0/config/Icons/SVGIcons.cache.serial is not writeable

Nope. I tried running as administrator and I still have the same problem.