they have updated powerarchiver. download at their homepage www.powerarchiver.com
Complete built-in support for ZIP, CAB, LHA (LZH), TAR, TAR.GZ, TAR.BZ2, BH, RAR, ARJ, ARC, ACE, ZOO, GZ, and BZIP2 file formats
Built-in support for XXE and UUE encoded files
Full MIME (Base 64) support...