I installed Pretty URL manually, And when i try to rename a URL and Make it primary it is giving error.
Thanks in Advance.
please use the support topic for the mod you have installed.
The reason is that the manual install didn't include the database changes, there's a PHP script you need to run to add DB tables but as Illori says you're best using the support topic to get help on that.
Ok. thanks
It's not a problem with the mod, it's a problem with the fact you installed it manually. Look in the install zip, you'll find a PHP script that has to be run.