The second IDE tries to share some information with the first IDE,
like the path to your own Examples folders. I put the
...\arduino-1.5.3\ folder right next to the other IDE folder,
both on the same disc. If you have space, try that?
Like
E:\arduino-1.5.2...
next to
E:\arduino-1.5.3...
Also, do not change the names of the folders, use names like the above.
Cheers, Gary