Solution to W3TC conflict with Appointments +?

I currently have Appointments + installed, and it works like a charm. I do however have one issue: It doesn't seem to want to play with W3TC. As soon as Appointments is activated W3TC just doesn't do anything anymore - especially the minify option. Turning appointments off solves the problem... However, I'd like to use both...

Are there any solutions for this? I've looked around but I don't seem to find any people / questions related to my problem.