I am having several issues that I think are related -
When I build a network, I am getting the "unable to build topology" error. If I delete one link and then re add it, the entire system will come up. Then, I will get the message that the network was successfully built, but when I go to highlight the network or perform the design computations, I get an error that there are no nodes in the system. I have tried deleting the network and rebuilding it, as well as redoing the links, and this will work once time, but then the error cycle starts again.
Any ideas?