Wordpress Media Upload

[villagel]

Wordpress' media upload was working fine. Today it's not working, so I'm suspecting something changed in our hosting environment. The default uploaded just returns "HTTP error". When I use the browser uploader it gives a 404 error page. What's puzzling is that the page is media-new.php: it renders just fine when asking me for a file to upload, but when posting an upload file it gives a 404. Clearly 404 isn't legit since it returns the real upload page prior to posting the upload file.

 

[villagel]

My current theory is something, probably a plug-in, did something bad to an .htaccess rewrite. After nuking the .htaccess and re-saving the various settings that affect that file (Wordpress perma-links, etc.), the media uploads began to automagically work. So... For future reference if anyone else is having this problem and the myriad proposed solutions Google returns fail you, here's one more for you to try.