Wiki

Hi
I am using Moodle 1.4.5 and when I try to create a new wiki I get this error message when I click on save:

Warning: main(C:\Inetpub\wwwroot\moodle/mod/wiki/ewikimoodlelib.php): failed to open stream: Permission denied in C:\Inetpub\wwwroot\moodle\mod\wiki\view.php on line 124

Warning: main(): Failed opening 'C:\Inetpub\wwwroot\moodle/mod/wiki/ewikimoodlelib.php' for inclusion (include_path='.;C:\php4\includes\pear') in C:\Inetpub\wwwroot\moodle\mod\wiki\view.php on line 124

Headers already sent.


A similar error happens when I try to access previous wikis which have already worked fine, but no longer work.

Can anyone help, please?

Fernanda