Best Compression Methods for 'Specific' Games. Q&A

[L33THAK0R]

I know Masquerade made a database recently for the first "Watch Dogs" title, however I've found myself needing to re-generate a new database in my own conversion, as I've opted to include a variety of mods that restore features left on the cutting room floor as well as providing the end-user access to content previously only accessible through online-only interactions. This restoration overwrites a considerable amount of existing files, as such a new database is required.

My current database seems to be considerably smaller than Masquerade's however, with a final result of 3.84 MiB (versus Masquerade's 14.0 MiB). The only issue I can currently see is when the fat2_fat3.bms script attempts to process the "windy_city.fat/.dat" which gives the following error:

Error: the compressed zlib/deflate input is wrong or incomplete (-3)
Info:  algorithm   2
       offset      494c62b4
       input size  0x0000632b 25387
       output size 0x00010000 65536
       result      0xffffffff -1

Error: uncompressed data (-1) bigger than allocated buffer (224656)
       It usually means that data is not compressed or uses another algorithm

I'm assuming this is referring to

            elif ZTYPE == 2
                comtype deflate

however my bms2xtl.ini configuration file seems to be fine:

[Config]
SafeMode=0
UserInput=
Exclude=lzma_dynamic,snappy
gzip=zlib
deflate=reflate
zlib_noerror=zlib
deflate_noerror=reflate
zlib=zlib
oodle=leviathan
xmemdecompress=xmemcompress
lz4=lz4hc:l9
zenpxp=zenpxp
lzo1x=lzo1x
lzma_dynamic=reflate

I've ensured I've got the latest version of the xmemcompress plugin present, and its appropriate entry within "xtool.ini" is pretty standard

[xmemcompress]
Encode=xcompress64.exe d -window=131072 -partition=524288 <library>
Decode=xcompress64.exe e -window=131072 -partition=524288 <library>

I'm honestly scratching my head trying to figure out what I've messed up this time, even more so by the fact that the file "windy_city.fat/.dat" is one such file that hasn't been modified. Any tips would be greatly appreciated, its definitely been gnawing away at me.