Thanks for your help.
Here is the event file. Does this mean the Dll MSVCR120.dll is not
functioning? or Missing.
Log Name: Application
Source: Application Error
reinstalled visual C++ and it did the trick.
MSVCR120.dll is a part of the Microsoft Visual C++, and that is right either reinstalling or if you would repair then it should also have worked.
Had the same problem. Found the problem in the event viewer thanks to this topic. Removed all VC i had, installed VC2013, had to reinstall Lightroom, then it worked!
Took me hours, while I had customers waiting.
Therefore I strongly like to suggest Adobe to look into improved error error handling/recovery/robustness in this area!