sympy/sympy — pull request #7720 by NabeelValapra (2014-07-09 16:13:20+00:00)
Title: Issue #7704 fixed. I am a beginner look into it.

I have made the error message more precise I guess.
Have canged the line number 363 in sympy/concrete/expr_with_limits.py
I have used a Aptana, So there is a .metadata file . Please Ignore it.
Any guidance is always welcome.