Can't Save

[jrhody]

I am playing Command: Modern Operations, the scenario Northern Fury 1: H Hour. Everything has been going fine for both auto saves & manual saves. After 19 successful manual saves & many successful autosaves, I got this message "Failed to perform Autosave! Error message: Object reference not set to an instance of an object". At first I thought not a huge deal, I'm doing manual saves anyways. I thought to double check & make sure they were ok, & then I noticed that even though I don't get any error messages, my manual saves no longer show up since it stopped working. My first 19 saves are still there, but it won't save anymore. Any ideas of what the problem may be?