Backburner job not picking up any Distributed Rendering buckets

We have an issue with any Backburner job not picking up any Vray Distributed Rendering buckets from other machines, but rendering locally works. Is there a fix to this issue? Will the latest Autodesk 3dsmax 2010 hotfix fix this issue ‘3dsmax2010_2010.06.08.exe’?

Our machines here:
-3dsmax 2010 x64 with updates installed (Autodesk 3ds Max 2010 Service Pack 1 and HF - Autodesk® 3ds Max® 2010 - 2010.02.17)
-VRay 1.50 SP5
-Backburner 2008.1.1
-all machines have Administrative privileges

Your help is appreciated,

*update* We went ahead and installed the latest hotfix ‘3dsmax2010_2010.06.08.exe’ on the workstations w/ the manager and server running, with still unwanted result. Any further suggestion to fix our issue is appreciated, thanks.

*update*

Vlado,
We ended up rolling back to VRay 1.5 SP4a, we can Backburner DR, instead of just staring at the VFB locally.

Although still interested, please reply if you have a fix for VRay 1.5 SP5 Backburner DR issue.

http://www.chaosgroup.com/forums/vbulletin/showthread.php?49915-DR-fails-on-net-render-since-SP5&p=430057#post430057