Hi!
This could be for a few different reasons.
In general, check:
– The sample rate is correct for SQ-Drive (96kHz).
– There is no BWF chunk or marker data included.
If they are stereo files:
– They are all stereo.
If they are multitrack files:
– They are all the exact same length and size.
– They are all mono.
– The are named correctly and follow the format detailed in the reference guide. https://www.allen-heath.com/media/SQ_ReferenceGuide_V1_4_0.pdf#page=86&zoom=auto,-361,484
I personally use Reaper to prepare files for SQ-Drive with the Force WAV setting.
If you need further assistance, please start a ticket at support.allen-heath.com and I can take a look at the files for you.
Thanks
Alex