Please uninstall everything if any has been installed and then follow the steps below.
Download the REGDELETE program, click on the link below for the REGDELETE program, after downloading run the REGDELETE program and choose STUDIO 10 on the product, try it about two times, then restart.
Then, Run the REGDELETE program again and instead of choosing all product choose the USER REGISTRATION and ACTIVATION DATA.
You can dowload Regdelete here.
And then read Step 5 of this FAQ.
Keep us posted.