Problem with Editing/Advanced/Delete/Cancel button on Quick Edit for Posts

[itsRahul]

Hello, I hope someone here can help me.

I have searched for a few hours on google, vbulletin forums, other forums, and have seen many similar issues but none of the solutions provided have helped me.

I will do my best to describe the steps/events related to this bug/issue.

I have been running vbulletin 4.1.7 without bugs for some time now, until this recent issue.

Note: I have not installed anything to my forums (plugins, products) for a long time and this error is relatively new. However, I did try to upload the vbulletin 4.2 files about a week ago and did not finish the install, so I thought this was the problem. I don't want to do a full reinstall because my database is massive and it takes at least a day of nonstop file chopping and query executing which I am not looking forward to doing (I've had to do it twice before). I cancelled the 4.2 install thinking I'd do it another time.

1. A member of my forums told me that he cannot edit his posts. So I tried with my laptop running firefox 25.0 and when I click the quick edit button, I get sent directly to the Go Advanced edit page. When I tried with another computer with firefox 24.0, I got the bug he described. When quick editing, the 4 buttons (edit, go advanced, delete, cancel) simply do nothing when a user clicks them. There's no message or anything.
3. My host, godaddy.com, has not upgraded to php 5.4, which was one of the possible issues I found in a reply while googling. It's still 5.3 and so that shouldn't be related. (Although, my vbulletin control panel says PHP 5.2.17, is this possibly a problem? I hadn't noticed before, but I don't think it's changed in at least a few months, so it shouldn't be related to this new problem with editing.)
4. I've tried creating a new style without a parent, and the bug remains while browsing with that style.
5. I've tried re-uploading from a backup of a month ago. This should have undone any problems from the unfinished 4.2 install files, because I uploaded an entire new directory with the backup and tried running the forums from there. It didn't fix the error.
6. Quick reply, quick avatar edits, mood message, and other small AJAX (I think AJAX) related things are working fine. It's just the quick edit button functions.
7. I tried disabling partial and all AJAX related products in the options of admin cp. Neither had any effect on the issue. I also tried disabling all plugins with the disable hooks line of code from some other solutions thread I found, but it didn't help.
8. I am pretty sure it is AJAX based on my limited knowledge about it, but I don't understand why only the quick edit is malfunctioning if it is a blanket problem. I haven't edited any code in my forum config or functions or any integral file so I don't know if it's a code error either.
9. After the attempt to reinstall 4.1.7 and then quitting when I found out it wanted me to wipe my database, my ajax chatbox on the forum homepage stopped showing. So I re-uploaded my backup forums again to a fresh directory.
10. I have the forums up with that backup (no edits in the last month). But it has the quick edit bug. Everything else seems to work fine.
11. I ran diagnostics which showed that there's no AJAX Unicode Issue with mod_security. Not sure what that means but it said No.
12. I heard about reverting templates (not too sure how to do this effectively), but my recent edits in my styles and templates show dates in 2012 and 2011. I'm ruling that out because that doesn't seem like it could cause an issue now.

Please guide me in the right direction. I don't understand what it could be and I've searched quite a lot.