I see a LOT of people complaining about Prochatrooms... mostly because they can't get it to work. But I personally have been using it for about 3 years now and have not had any problems. I'm not a programmer, but I am pretty good at figuring these technical problems out and got mine to work well.
For instance - with the guy that said his download was missing files... that sounds like he downloaded the "Upgrade" version - not the "Full" version. I know because I did it too lol. A lot of these people having problems may be in over their heads by trying to install & configure chat rooms. I'm no GURU and can't write a line of code... I had to spend WEEKS/MONTHS tweeking my installation and getting the colors how I wanted them to make it look nice & professional, but granted - it wasn't easy. I had to get a lot of help from the "Community Forum"... I never sent emails, and in fact they do say right on their website that users have to get help from the forum. There's a GURU in there that's pretty kick a$$ and seems to be able to solve almost anything.
I WILL SAY however, that he did seem to stop answering me after awhile, and now the whole site seems to be gone - although their domain name is not available. So I'm confused about that... and can't get to the site now. WTF?? I like the program, but it does seem to be a shaky & unreliable company. It seems that if you can get it working yourself - you'll love it. If not... you're screwed!