Stereo 3D Sync not working in 15

Hello,

I am a fairly light user of davinci but I have been creating/outputting stereoscopic content with the it since version 10.

Usually it is super straight forward to sync files but for some reason it is skipping all the files. I am using the first four characters and match file name is checked. Content is 2 reds T003 and B003 (for top and bottom)

What am I missing? Any advice is greatly appreciated

works fine for me. Check the manual/experiment with the settings/if still no luck then post more details