Unable to save drawing because command in progress

[AutoLISP]

I had the displeasure of experiencing this scenario a few times and lost some work, along with a few of my colleges. I haven't been able to figure out why it happens, but it does. While working in AutoCAD 2008 running SP2 I will try to save the drawing and it gives me the above error message (see title). It appears there is not way to save the drawing without quitting AutoCAD thus losing your work. The SAVE or SAVE AS command yield the above message. There is one way though....press CTRL + Q and it does a save and quits.

Just an FYI if anyone experiences the same scenario.