Which version of SP are you using? Are you up to date?

Version 5.7.5.2 which is the latest that shows up for me.

That’s good.

Can we start with the error log (in the toolbox admin menu section). Clear it out please using the button at the bottom. Then try and edit a topic title. Save as you would. Then go refresh the error log to see if anything is reported. Interested in actual errors or SQL/Database entries – the pink ones.

I did that. No pink errors showed up. Only this notice:

https://www.screencast.com/t/r6FxQdIU2HxZ

not sure you posted the entire message???

how are you editing the title?  the forum tools?

I use the forum tool set’s “edit topic title” function. I have done this for many years, but just now it stopped working.

Not sure what you mean when you asked if I posted the entire message…

your message only says 

SP Error Log

looks like the image didnt upload…

Hmm, strange, I see the message and the image at my end. Here is what is in the message in response to Yellow Swordfish’s error log post:

“I did that. No pink errors showed up. Only this notice:”

OK – so no straight php errors. Next stop is to see if the JavaScript and AJAX are throwing up any errors. You can check for these in your browser console. This How To FAQ has a basic explanation of using the console if you have not used it before. Errors most usually show up in red (although I have not used all browsers to check that). But the same routine applies. Load page, clear console, perform rename attempt etc., and see if the console reports an error. Again – just have the errors turned on.

I did that, and no red errors are showing up in the console. What else could cause this?

Apologies but we are not ignoring you. I want to discuss this with @mr-papa who may have ideas but he is travelling at the moment.

The problem is curious. Do other items in the tools function as expected? Also – are you aware of installing anything new around the time this stopped working? And perhaps, as a third question, does the name you are wanting to change the topic to have any odd, non-alphanumeric characters in it?

There are no odd characters in the title. I also tried editing other topic titles, and they don’t work either. There are other forum tool functions which also don’t work. For example I tried moving a post to another topic, but that didn’t work either. I tried looking at the properties in the tool set – nothing opened. I could delete a topic via the tool set.

The only thing that happened around the time that I noticed the problem is this. I redid my site in a staging environment. I changed the theme and upgraded it. Then I pushed it live, however I specifically excluded all simple:press related files because I did not want to overwrite any posts that had been made while I was working on the staging copy. These are the files which I excluded from the push. They should include the forum posts and the blog posts. So theoretically the forum should not have been affected by the editing in the staging copy.

wp_comments
wp_usermeta
wp_postmeta
wp_posts
wp_sfmemberships
wp_sfuseractivity
wp_sfnotices
wp_users
wp_sftopics
wp_sftrack
wp_sfposts
wp_sfcache
wp_sfmembers

You are probably OK there although for the record I must point out that you list only a subset of the forum tables above.

Sorry about the questions but there is one more i did not ask if I am going to have to build a new test system for this… what version of WP are you using? Again – are you up to date with the latest version?

Yes, I update wordpress and all plugins immediately when a new version is available. I also just tested this issue in the staging copy, and the same issue exists there.

Regarding the forum tables – I looked at all the files in the staging copy which started with wp_sf, and those were all that I found. Which ones are missing?

The forum works fine, except the tool set went on strike which is a serious problem for me.