OK masks works very well, with the configuration in the last mask "/$precomp=" with Precomp added, should only be used with precomp 0.38, other versions Precomp can be used safely without entering Precomp in the last mask.
Last Mask : "/$precomp=
precomp+msc+srep64+...etc" (Only precomp0.38)
Last Mask : "/$precomp=msc+srep64+delta+exe2...etc" (All Precomp Version)
Panker you're doing a great job.