Strips render differently using backburner and vray - needs urgent sorting, plz help

[aliadil]

We are a new and small company using 3ds max 2013 and vray, we have 10PCs in our office all having the same 3ds max 2013 installed same version of vray and same version of backburner and also the same windows 7 operating system on all pcs.

 

Recently we started using backbuner to finish the jobs faster but when the rendered image is finished all strips have rendered differently, some are lighter some are darker some are white washed. Even trying to combine the strips separately in photoshop doesn't help.

 

I have uploaded an image of one of our renders, you could notice in the image that strip 7, strip 8 have rendered differently and also there is enough noticeable difference in the other strips.

The image is 1920 X 1080

 

Could any of you suggest us how to tweak this problem.

 

Edited May 1, 2014 by aliadil