Resource types

Hi all,

I am trying to update my course content but I get a error message "Could not update the resource" in the resultant page. The page stops at course/modedit.php.

I have tried other content but the results are the same. I didn't modify any php file and I just update the course content as usual.

May I ask is there anyone know what the problem is? Anyone have such experience before and how to solve it at the end? Please kindly let me know.

Thanks,
Kenny