I made some changes in the way the site handles "cookies". This has caused a few issues in a couple users, so I'll pass on the fix.
If you're using Internet Explorer, go up to "Tool"....than click on "Internet Options"....
In the "general tab" (which is the default tab), under temporary internet files click on "Delete Cookies".
After that close and reopen the browser and you should be able to log back in.
If you're still having problems, please contact [email protected]