After upgrading to 2.1, file uploading doesn't work. When I upload a file, I see the WordPress login dialog box appear inside where the file should have uploaded. I checked permissions and even redid the entire install -- still having the same problem.
Disable your plugins, until you find the one interfering.
Failing that, turn off your ad blocker in your browser.
Failing that, clear your browser's cache.
Failing that, post again. ;)
I'll give it a try. Thanks.
I cleared the cache and it worked. Thanks.