Insert images into post WordPress 2.5 doesn’t work

could be a plugin conflict for instance bad behavoiur was creating this issue for me the fix was “remove “Shockwave Flash” from the list of banned
user agents in the blacklist.inc.php file.”

Try deactivating your plugins and see if that changes anything. Also a quick search around the forums will net you 8 billion topics on this subject.

Vist below Link
to solve yrs problem
https://vevin.com/wordpress/wordpress-25-image-uploading-problem

There are several problems that systems can have with the new uploader.

I’ve tried to detail them here:
https://www.ads-software.com/support/topic/164999

If those don’t work, check back later, we’re adding to it all the time.

Otto42:s page helped me!!!

It was the “known IE fix”. It made my day, thanks Otto.

I tried to download that file and it keeps saying invalid file. I’m at a total loss!