When installing or uninstalling other programs with Ad-Free installed you may get a warning message to close your browser when it's already closed because some installation programs will detect Ad-Free as an open browser.

Generally you can ignore the message with no problem. However, if either program doesn't work after installing the new one or if the other program doesn't let you ignore the message and insists on all browsers being closed you'll have to uninstall Ad-Free, install the other program, and then install Ad-Free as the last step.

Please also see:

I installed AOL and now I can't access the Internet. http://www.netnanny.com/support/kb.php?id=501000000000RFH