[php] Could not execute menu item (internal error)[Exception] - When changing PHP version from 5.3.1 to 5.2.9

  1. Like you installed older version of PHP do the same with Apache. I picked version 2.0.63 and then I was able to run WAMP Server with PHP 5.2.9 with no problems.

  2. I also read that it's problem with 64-bit version of WAMP.