There was a problem sending command to the program -Windows 7 Error

Hi

I today faced a strange problem in my win 7 but not a problem but strange error message. I saved a text document and found error saying

"There was a problem sending command to the program" but everything working fine and only opening that text file and closing show error. What I write in it get saved too.

What is this error about ? any harm from it ?

Weird .. I have no idea about it.

no sometimes we get errors like these because of compatibility issues of the program.
or ram shortage.