Awesome mod! Definitely marked as installed

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I keep bumping into a problem though. As soon as I try to add a product using the forums (not the ACP), I get the following vBulletin Message: "This feature is currently not in use"
Any ideas/suggestions?
- I am currently running vB 4.2.0 and the product installed fine.
- What I'm trying to do:
I'd like basically two sections; one for movies (and if I get everything working, I'd like the same for TV series and music albums as well) and one for hardware components at the moment (possibly software in the future, when I get things working/sorted out).
I'd like users (or myself) to be able to add either a movie (eventually a TV series and music albums) or an actual product (like a headset, monitor, hard drive, etc) and add a review, with for now basically one thread per product (and the reviews/responses/etc).
If I can set it up correctly, eventually perhaps one thread with all reviews and one with responses to the product/reviews, just not entirely sure how to set that up properly.
The separate forums are already present; a category with sub-forum called 'Movies' and a category for the hardware (& software) with a sub-forum 'Hardware'. I created a test product using the ACP in the Movie section, which worked flawlessly. Other users and myself are able to add a review to that product without issues.
However, as soon as either myself or a user tries to add a new product, I receive the aforementioned message. I did check the usergroups and the option 'Can add new products (moderated)' has been set to 'Yes', not only for myself but basically most usergroups.
I hope what I'm trying to achieve is possible (I believe it is?), but for some reason, I can't get it working. I did read the instructions carefully and have enabled the option in the usergroup manager, but am probably still missing some setting?
Any help would be greatly appreciated, thanks in advance!