Hi Himanshu,
Next Time when try to save and you get same message , Don't save , click no on dialog box. Goto extras , there you can find logs. as shown in the screen shot. If you have done this before and you couldn't see any logs there. Next option would be to goto tcode st05. there you put up a user trace or program trace or tcode trace, which logs all the runtime objects and messages there.
Thanking you
Vengaiah
