Unsupported compression method [xzlib+srep+lzma2:ultra:64m:bt4:fb273:lc8:mc1000000]

[:( Sad8669]

The name used for compressor during compression in arc.ini must be same for decompression end too, for example :

xzlib+srep+lzma2:ultra:64m:bt4:fb273:lc8:mc1000000

[External compressor:xzlib]
header    = 0
unpackcmd = xtool.exe decode -t100p - - <stdin> <stdout>

if method is xzlib+srep+lzma2:ultra:64m:bt4:fb273:lc8:mc1000000

and it is set like this :

[External compressor:xtool_zlib]
header    = 0
unpackcmd = xtool.exe decode -t100p - - <stdin> <stdout>

The installer won't detect it. Set the same for lzma2, it uses 7z and use CLS-SREP for srep.