Tried this cls-precomp.dll and found next:
1. No output from precomp when packing if using dll.
2. Precomp options ignored. Only used those set from dll.
3. Because of 1 it's impossible to see why precomp stopped working

4. It sets temp folder near arc.exe, so it's necessary to run pack from SSD. Otherwise it wil take loooooong to pack.
5. Tried packing 15gb game - precomp 0.4.6 fails. Can't debug because 1.
6. Christian Schneider's 0.4.7 fails not even starting to work.
Did anybody managed to use this for packing big games? May be some example .bat and arc.ini?
pack cmd:
Code:
arc.exe a -ep1 -dses --dirs -s; -lc10g -ld1024 -di -i2 -r -m_precomp %data%_precomp.bin %source%
arc.ini:
Code:
[External compressor:precomp]
header = 0
packcmd = precomp -intense -cn {options} -o$$arcpackedfile$$.tmp $$arcdatafile$$.tmp
unpackcmd = precomp -o$$arcdatafile$$.tmp -r $$arcpackedfile$$.tmp
[Compression methods]
_precomp_text = precomp+rep:1gb:a99+exe+delta+tempfile+mm+lzma:ultra:512m:a2:fb1024:mc65536:lc8:lp4:pb4/$text=dict:128mb:80%:l8192:m400:s100+lzp:160mb:92%:145:h23:d1mb+ppmd:16:384mb
_precomp = precomp+rep:1gb:a99+exe+delta+tempfile+mm+lzma:ultra:512m:a2:fb1024:mc65536:lc8:lp4:pb4
But with dll precomp runs with -intense0 -cn- and works in the folder mentioned in 4.