Anybody else havin problems with saved flight?

Hello all,Having the latest NGX version installed without any problems I recently detected some strange behaviour when trying to restore a saved flight. It might have to do with a STEP entry in the FMC or not - it's time consuming to run such a test.The aircraft itself seems to recover after running through the initialization phase but the FMC remains blank and when trying to feed the flightplan in again it crashes FSX (a complete freeze might happen as well) and it does not matter if I tried to load it completely or if I started to hammer it in manually.I opened a ticked already but I would like to know whether there are similar experiences from others. BTW, I don't have a problem when loading Ryan's tutorial samples.