DRAC5 latest firmware and IE10?

I'm starting to migrate all our Hyper-V hosts from 2008 R2 SP1 to 2012 R2. Some of our test servers are older 19/2950s with DRAC5 cards. I can get the Remote Console to load under IE 10/JRE 1.7.45 but not the virtual media. At first it said that the 32-bit plugin (virtual media) couldn't be opened in a 64-bit browser. So I disabled IE Enhanced security mode, added the IP to trusted sites and now it simply returns "Virtual media session is unavailable". 

Normally I'd go to a box with an older version of IE/Java but that's not an option. 

Any suggestions on getting this working under IE 10?