I had my "project" open, working in it all morning just fine. Then I went to open a different "room", and I noticed that the "Open Room" button was greyed out. That was weird. So I saved my work and shut down, and restarted the program.  Now, when I open the Project the "Current Project:" selection is just blank... but my Room list is available, when i select open room.  But when I select a room to open, it starts a new drawing from a selected template, instead of connecting back to Factory Database. Luckily, I can see that my dwg files in the factory data base are still in tact.  Its just seems that there is some kind of link severed at the project level.  I've never run into this before,  anyone have insight?  thanks in advance.