## WeBWorK Main Forum

### Rochester Library

by Mike Everett -
Number of replies: 2

I am trying to use the same exercises from the Rochester Library that I had used in my course a year ago in the same course, but I receive the message:

You are missing the directory templates/Library, which is needed for the Problem Library to function. It should be a link pointing to /opt/webwork/libraries/NationalProblemLibrary, which you set in conf/global.conf. I tried to make the link for you, but that failed. Check the permissions in your templates directory.

I think I am supposed to go into the File Manager, but I am not sure what to do next?

### Re: Rochester Library

by George Jennings -
The error message suggests that the web server doesn't have permission to write to your templates directory. A sytem administrator could fix that by following the instructions on
http://webwork.maa.org/wiki/Installation_Manual_for_2.4#Setting_permissions
-- see the lines about "WeBWorK data directories".
If the permissions prevent the web server from writing to the templates directory then I think the permissions would prevent you from fixing that with the file manager. I think you'd have to be an administrator with command-line access.