some kind of algorithm problem in freearc 0.67

[rafikhan]

I compress a 11.1GB .pcf file with freearc & it goes down to 4.1GB but when i try to unarc or extract, freearc say that error in algorithm.dont have a bit idea about this massage. i use the same freearc that i compress the .pcf file.

In Short version:
arc -m0 11.1GB
precomp -cn -intense 19GB
srep -m3f 11.1GB
arc -mx 4.1GB
unarc -x 4.1GB ERROR: read error (bad media?) in compression algorithm delta
Same time show => ArcExtract.hs:154:56-126: Non-exhaustive patterns in lambda