Quicktime issues with Resolve 15

Hi I am hoping that someone may have an answer to this problem .
When I am loading quicktime file into resolve 15 I am getting a comple white image.The thumbnail in the media pool is white and the video shows up white while playing. Compression does not matter I have tried Animation, Pro Res etc. It reads Mp4 fine. I installed resolve 14.3 and the same files look fine. Any help greatly appreciated.
I am using
iMacpro
os 10.13.2

Is processing at Auto, OpenCL or Metal?

I saw that on 15b5.

I updated my graphic card drivers and all was well.

I would suggest trying that.

Ok its was using metal on a new iMac pro not sure how to update the graphic drivers as it does not use coda any more ?

Ok I just upgraded to os 10.13.5 and issue is resolved. Thanks for the help.

[Dwaine Maggart]

Yes, macOS 10.13.2 and 10.13.3 have serious OpenCL and Metal issues that can cause the sort of problem.