Yep, same here. If you have admin you can make a reg file to replant the SN. It still required activation but works fine now. Put this in notepad, replace my xxx with your SN, save as .reg then double click. Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINE\SOFTWARE\SolidWorks\Licenses\Serial...

Did you by chance ever get around to posting these two mentioned macros Rob?

You know the mottos - If it ain't broke, brake it. If it's broke, don't fix it.