Problems installing Nero

I am trying to install the demo version of Nero Version 6 and I am getting an odd message “the source folder was not found”. I do not know what to make of this. I am installing it on a Dell Gateway laptop. Any assistance would be greatly appreciated. Thanks in advance.

Download and run the Nero Genreal Cleantool from the following link: when finished re-download the trial version which is good till the end of August.