Cannot create categories unless you disable javascript.

I’ve got the same problem on a 3.2.1 networked/multi site install. I did some research on the forums and there’s probably four closed threads on this issue going back three years.

Disable all your plugins.

4 threads in 3 years in a forum with millions of posts is not a huge issue. I know it seems like on when it’s your site but… ??

JS conflicts almost always mean a plugin issue.

Thanks, it appears to be the WordPress SEO by Yoast plugin with WP 3.2.1 network install.

I’ll keep testing to see if there are others.

I must say that losing core functionality because of a javascript conflict seems slightly more than trivial. I’ll report it to the plugin author.

That’s weird… I use that same plugin with network install and it’s fine. It’s probably conflicting with another plugin.

That must be it.

Using: W3 Total Cache, Omniture – SiteCatalyst, JSON API, Google News Sitemap Feed With Multisite Support, and Embedly.

W3 Total Cache is a pain to re-enable for each blog. I’ll do some testing next week and try to figure out which two conflict.

What was strange is that some of the blogs wouldn’t allow the creation of new categories and others would. It may have been blogs we added after one of the conflicting plugins was added. I’ll try to be more scientific about tracking down which ones interact badly.

To add to the complication some are activated at the network level and others at the blog level.

W3 Total Cache is a pain to re-enable for each blog

I use that too ?? Use the export tool on the main w3tc page to save your settings. Then when you disable, just re-import when you re-enable.

To add to the complication some are activated at the network level and others at the blog level.

only network activate plugins that specifically tell you to.