Save Error

I am using 2010 SP 4.0 and started having this problem for 2 weeks now.

Sometimes when I try to save a file it does not get saved but the save button is active and the dialog disappears and I can still see the star next to the file name. All I can do is hit dont save which it accepts and hence all the work is lost. I have to close solidworks all together and open it again in order to be able to save files again.This has been happening particularly when I am trying to save older version files.

Does anyone else have this problem?I think this is a bug and must be resolved.

Thanks,

Phani Vadapalli.

SolidworksGeneral