update 16 shared database to 17 problem with DNG image seq.

Hello,
We have a shared database which we updated from 16 to 17.
all projects updated well except one which is a project containing only heavy DNG image sequences.
We tried everything, but there is no way to read any of the image sequences in 17.
we rolled back to 16 and we were able to play the sequences nicely.
I don't know if i can provide any elements to help you.
thanks and have a nice day.
We have a shared database which we updated from 16 to 17.
all projects updated well except one which is a project containing only heavy DNG image sequences.
We tried everything, but there is no way to read any of the image sequences in 17.
we rolled back to 16 and we were able to play the sequences nicely.
I don't know if i can provide any elements to help you.
thanks and have a nice day.