Joomla 1.5 versions Error
Illegal variable _files or _env or _get or _post or _cookie or _server or _session or globals passed to script.
Solution:
The only solution that worked is to comment out the following line in the request.php file.
Find the file here:
/{your_joomla_folder}/libraries/joomla/environment/request.php
And uncomment as follows:
// $failed |= is_numeric( $key );
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