User Portlet User Portlet

Thanks! Yes, the ```r``` integral diverges, but the ```1-3z^2``` term seems to rescue convergence in the 2D integral. This term alternates signs twice between ```z = -1``` and ```+1```, so it's plausible that this is possible. This is a funny...
Jason, thanks. Your first suggestion worked. I deleted those directories, and then ran Mathematica. After entering the activation key, it's now up and running. Thanks you prompt help! Stefan