Wild guess... ;)

I don't have a clue about any of this...so, off the wall. Sounds like a path is corrupted...

1. establish IP of both computers
2. search registry for "old" path of one to another; use paths that work from other unites as modules or models
3. be sure that old settings are still o.k.
4. you may need to write a new path between the mother ship and one of its satellites