[github]

Thanks for the quick response and explanation.

I read the readme.log in Masks_Additions_v1.7z and wasn't fully understand the difference that arc.exe will use cls- files without the need to declare a external compressor in arc.ini, but for FA Next, it has to be declared in fa.ini

I tried again with a clean extracting of Masked_Compression_v3.0_.7z
adding the cls- files from Masks_Additions_v1.7z to where arc.exe is.

And in the Advanced_Data_Arc.bat I changed the method to :

arc\Arc a -ma9 -ds -lc4096 -ld4096 -di -i1 -ep1 -ed -r -w.\ Setup-1.arc -mprecomp+srep+xz "Pack\*"

This compressed fine.

I copied the srep and xz methods into the arc.ini in the folder of Arc_u.

Then I tried to decompress with Advanced_Data_Unarc.bat

but it gives error of

Recompressing Data...
FreeArc 0.67 unpacker. Extracting archive: Setup-1.arc
Extracting test.bin (124 bytes)

ERROR: archive data corrupted (decompression fails)******************************************** ***********************************

Decompressing is Completed

************************************************** *****************************