You need to install the DivX Plus web player to watch videos on that site. Download the freebie version from here: http://www.divx.com/en/software/divx-plus

I have DivX Plus Web Player. Divx is giving me the error of 403. That the server cannot play . I went back to explorer 8. Works fine. I guess Firefox 4, must have a compatibility problem. Trying to find a solution

Can you update to v3.6.16 by clicking Help | Check For Updates and then try again please.

If it still doesn't work, try running Firefox in Diagnose Firefox issues using Troubleshoot Mode. If it functions properly in that configuration, then one of your add-ons is the culprit.

I have uninstalled Firefox 4 & reinstalled. Stagevu worked last night. It is working now, But the Divx says it is disabled. I cannot enable it. But at least I can watch movies again. Thanks!!!!