Hi Rosa..
Try this:
1) Ensure that the product is not running
2) Start Explorer and ensure that you can view hidden files and folders:
2.1) Select the Folder Options entry on the Tools menu, click the View tab, ensure that Show hidden files and folders is checked
2) Navigate to the following location using Explorer
C:\Documents and Settings\All Users\Application Data\Macrovision\SafeCast\Product Licenses
3) Delete the appropriate license file:
For AIS 7 the file is named B1EC4000.DAT
For AIP 7 the file is named B1E56000.DAT
4) Run the product, a 15.1.54 error dialog will be displayed, follow the prompts to re-authorise.
Regards
Asidek Consultant Specialist
www.asidek.es