UBB.threads PHP Forum Software Community Forums UBB.threads 6 Version 6 Support w3tvars.pm did not return true value at subscriptions.pl line 28

That could be your problem. This:

$config{'path'} = '/path/to/www.uemforums.com/2pop/ubbthreads/cron';


Needs to be the actual path to the root directory of your forums. So for one, you'll want to drop the cron. Is that the actual path? It could be but I've never seen a directory structure that starts with '/path/to/...'