Blank screen on second Dell e2311H monitor
 

Trying to run extended desktop with Mid 2012 MacBook Pro 13 running OS X 10.9.4 (13E28) with two Dell e2311H monitors. Have most current Mac driver but still doesn't work. Also running Parallels, and thought I could install Windows driver in Parallels to get around known issues, but can't install on VM. Is the issue I'm having really one of the known issues with the Mac driver? Any news on when it will be resolved?