I'm trying to install V1.5, but during the installation process I select to accept the terms and conditions, hit continue, and the page just reloads with the default "I don't accept" reselected.

I've downloaded the zip file twice, and uploaded to my server twice. The result is the same each time.

Server has:
PHP version 5.2.17
MySQL version 5.0.95

I can't complete the installation because I can't accept the License agreement - any help, please?