Hi,
Parameter.php is a class that manages... parameters.
This class provides access to paramter table and other paramters fucntion.
I don't understant your need to rename projector.php to projeqtor.php :
- the error correctly refers to projeqtor.php file
- the setup should have installed projeqtor.php
Pay attention that V4.0 changes several file names, but all this is automatic.
At worst, you can possibly still have old files, if PHP user did not have rights to delete these files.
But the "class not found" is a good clue.
V4.0 introduced new way to load classes, using spl_autoload_register.
This function exists since PHP 5.1.2, so you should not have issue with PHP 5.2.14.
After searching a bit, I found that third parameter of this function have been introduced in PHP 5.3.
So maybe you can try replacing line 2 of projeqtor.php
spl_autoload_register('projeqtorAutoload', true, true);
with
spl_autoload_register('projeqtorAutoload', true);