Java Web Start cannot find message file

Error message: Java (TM) Web Start 1.6.0_31 Can not find message file

The local file that helps Collaborate start up a little faster is corrupted.

Solution: Delete the existing one and see if that clears up the problem. It will download a fresh copy when you launch a new session.

Windows:

1. Open Control Panel and then open the Java Control Panel
2. On the General tab, under the heading Temporary Internet Files, click on View…
3. That will pop-up the Java Cache Viewer. Highlight the Blackboard Collaborate in the application list and click on the red X to delete.

 

If that did not solve the problem, follow the next steps:

1. In the same Java Control Panel on the General tab
2. Under the heading Temporary Internet Files, click Settings…
3. Under the heading Disk Space, click Delete Files…
4. This will delete all cache files and should fix the problem.

If that did not solve the problem, visit this site and follow the instructions (carefully): http://support.blackboardcollaborate.com/ics/support/default.asp?deptID=8336&task=knowledge&questionID=2392

 

Apple OS X:

1. Open Applications, Utilities, and open Java Preferences
2. Click on Network tab, and open View Cache Files…
3. That will pop-up the Java Cache Viewer. Highlight the Blackboard Collaborate in the application list and click on the red X to delete.

Close all of those pop-up windows and try to launch a new session of Collaborate, it will download a new copy of that file.