@Dr. Venkat Subramanian

I already tried different solvers, it does not even work with Euler explicit. It will take me a while to get the 64bit version. If someone here had a couple of free minutes to check out if large model with lets say up to 1000 bodies run on the 64bit maplesim version that would help me a lot.

@Thomas Richard 

yes, I think that is probably the best idea to try it with the 64 bit version.