Office 2010 and windows 7 not save power point presentation ?

I am opening Power point Presentation 2010 then internet gives me 3 options , open , save, cancel.

If i save Power Point Presentation then i will save it to drive location. after some modification and saved back to presentation. i have user power point plg-in.

But when i click open then power point presentation open if i change some part and click Plug-in for save back to presentation. it gives me following error message:-

Run-time error '- 2147467259(80004005)': Presentation (Unknown member) : An error occurred while Power Point was saving the file.

Can anyone help me out...

Thanks,

Mangesh 🙂