Joomla Real Estate

i have upload a new language (Greek.php) /components/com_realestatemanager/lang and after that i have problem with realestatemanager menu. I am adding a new menu item / realestatemanager but when i open

www.findingreece.com/en/component/reales...ategories?Itemid=126

i see a 500 Internal Server Error.

At admin cpanel/modules when i choose "Realestate_OS_TouchSlider" i see:

Error
Check-out failed with the following error: The user checking out does not match the user who checked out the item.
You are not permitted to use that link to directly access that page (#113).

and when i enable the module of "Real Estate Manager Location Map Free" all is right

Hello,

500 Internal Server Error.
That some server error - please check httpd server error log


The user checking out does not match the user who checked out the item.
Some body else edit that module.
In joomla admin menu: System->Global checkin - that do full site checkin

Thanks,
ordaSoft team