Yes, you can get crashes when you are simulating high res grids and more than one grid at the time. And what I mean with hard use is simply to use all the features that the plugin have and maximize the setup. I do a lot of stuff in Fume along with TP and I get a lot of crashes when using this crack and those crashes doesn't show up with a legal lic.
Also, this crack is based on an older version of AfterFLICS.exe.
But like I said, it's working okay, but not fully!
@Xenox1985 - I posted AB just a while ago, check a few posts up.