I have a similar problem on XP SP3. When I launch EasyPHP 5.3.9 shows me the error message:
Error in Apache configuration file: ""Impossibile eseguire il programma specificato"" Edit?
(translated: ""Can't execute the specified program"")
hi Karigm, have you resolved the problme? and How?
I have found the same error when install 5.4.4 on win 2008 server:
"The application has failed to start because its side-by-side configuration is incorrect...."