H 11.0.547 / Linux / .pic files

Seems like something that should be trivial, but I can't get to work.

I have many sequences I'm trying to layer together… for example…

A.0001.pic - A.0100.pic
B.0075.pic - B.0200.pic
C.0175.pic - C.0300.pic

and so on…

All I'm trying to do is comp A over B over C… etc.

Comp always stops and complains it's missing frames outside of the range of the various sequences.

Have tried the layer cop, and even a series of over cops… same problem.

Have tried all options for “Missing Frames” options and turning off “Warnings”.

It works if I place an empty frame at the beginning and end of the full range for each sequence, but then I end up with dozens (in this case) of frames being called for each step… instead of only two that might be overlapping.

I must be missing something simple.

Thanks.