My application was running fine. Then the 30 day trial license expired, and I purchased a license. As part of the purchase I received a new 90 temporary license which I am currently using.
Immediately after doing this, the upload stopped working for some users using Firefox, but not all, with the following changes in behavior:
- The file dialog box, instead of having "Open" in the title bar has "Select file to upload by server" in the title bar.
- After selecting a file, a login prompt appears, but valid logins are not accepted.
- Browser hangs.
This problem does not occur for users with MSIE, and occurs only for some using Firefox. Comparing the Firefox users with no problems to those with problems I noticed that the users having problems did not have the Silverlight add-in installed. Sure enough, disabling the addin allowed me to reproduce the problem where before there was none, and installing the add-in eliminated the problem.
My question - how can changing the license file (only the license file, not changes to DLL's or code) trigger this? Prior to changing the license file all users were successfully uploading.