Anyway, it was installing fine, no error, could create an RRR site… but it was not booking the rooms properly. Huh? I know about the fact you cannot delete a reservation (fixed that issue – future post), or that there’s a bug when creating resources in any locale except US (bug in the Workflow, fixed that)… but being able to book the same resource for the same time to 2 different people? Surely even the simplest test would have picked this one up!
Turns out that there is a column that this “Conflict Detection” feature relies on… and if you try and install the application and this column exists as a site column for a parent (or a site collection column) then you’ll run into this. Problem is, I cannot remember the name of the column… and the environment is one I no longer have access to (so I cannot find out). I know this post does not have a specific resolution, but if you have installed this Template, and you find that you can “double-book” meeting rooms, check to make sure that the necessary feature is active – If it’s not, the error you get when you try to activate it will likely indicate a column name conflict.