15
Don't panic...
Manually edit mainfile.php and change this line:
define('XOOPS_CHECK_PATH', '1');
so XOOPS_CHECK_PATH is set to O...
However, it's strange this did appear "like this"... Maybe you should check XOOPS_ROOT_PATH and ensure its value is good (if it suddenly broke, it's more likely that your hosting company changed its servers configuration and that you should update XOOPS_ROOT_PATH to reflect you new installation path).
skalpa.>
Any intelligent fool can make things bigger, and more complex. It takes a touch of genius, a lot of courage, to move in the opposite direction.
Two things are infinite: the universe and human stupidity; and I'm not sure about the 1st one (A.Einstein)