ZBrushCentral

4.0 subdivision issue

I’m running zbrush 4.0 on a macbook pro, OSX 10.6.4 Snow Leopard

I’m having an issue where from time to time, when I open zbrush, it will not let me subdivide a mesh no matter what I do. It’s not consistent and I’ve checked if there are issues with say… having MAYA open at the same time or Firefox but I can’t seem to find a common thread to this.

Eventually, after enough restarting the program, everything works fine.

Is this a know issue and if so, could someone point me to the area where people have been discussing it or perhaps offer some workarounds for when this happens?

Thanks for the help and I apologize if this is a known issue I have not seen any previous threads for.