what does happen when you save?  do you get the status message in yellow box that fades away?  what does it say?

next step would be to use a dev tool, like firefox with firebug and look at the http response…

Absolutely nothing happens, no yellow box, no alert.

Using Chrome’s console I get the following when clicking “Update Global options” on Glbal settings

POST http://www.glutenfreesociety.org/index.php?sp_ahah=options-loader&sfnonce=c683d92fd6&saveform=global 403 (Forbidden)               jquery.js:4
f.support.ajax.f.ajaxTransport.send              jquery.js:4
f.extend.ajax                                    jquery.js:4
b.fn.ajaxSubmit                                  jquery.form.js:11
b.fn.ajaxForm.ajaxFormUnbind.bind.bind.i         jquery.form.js:11
f.event.dispatch                                 jquery.js:3
f.event.add.h.handle.i                           jquery.js:3

so looks like your server is forbidding ajax requests…  I would suggest taking it up with your host…  have they installed mod_security or other security ‘aid’?  or have you added any wp security type plugins…  you probably need to whitelist the forum ajax responses if so…

But everything else works in WordPress and SimplePress except for this. Doesn’t WordPress categories and tags work using an Ajax request to create anew category or tag?

Also the problem persists even when no plugins are active and the default WordPress theme is used. So it cant be a plugin conflict

not sure but as your data clearly shows, the server is forbidding the request…  I am not sure why its doing that…  and not all ajax is created equal…  wp does their admin ajax requests a bit different than we do…

mod_security is not a plugin for wp… is an add on module for apache…

Great, thanks! I will get on to the webhost now and see what they say

Thanks for the help!

Please do let us know…

I am having a similar problem. when I try to save a change to a forum group I get the yellow box that fades. It says All usergroups must be assigned a default permission. I can change the child forum but not the group level settings.

I am not sure why this is appearing now as I created the forum group and it was working fine. What does this message mean?

the message tells you the issue… you have not assigned all usergroups a default permission… At the bottom of the edit/create form is a list of usergroups with pulldowns to select a default permission… fill all those out and then save… should be good to go…

It is very odd. The problem was with another (existing but unused forum). I found a group that had a user group without permissions selected. No idea why an unrelated forum that has never caused this problem in the past all of a sudden prevented a new forum from being saved. Oh well . . . at least it is working now!  Thanks.

good to hear. thanks for the update.

Turns out it was an htaccess issue, client had modified htaccess with some extra items for security which was blocking certain types of requests and returning a 403

glad you sorted it. thanks for the update!