I realy like IZArc but unfortunately I have noticed that it misses some files( packing or unpacking) off and on. U can reproduce the bug as follows. Download the zip file named " malware" from here. Password for it is "test" without commas. ~Snip. No links to malware or potential malware allowed on these forums. - Ron~ Unzip it. No try to re-zip it exactly as follows: Right click the " malware" folder> IZArc> add to archive file> Encryption> 128 bit> Password> Enter assword, say 1> OK> Re-enter password> add. That,s it. Now check the zip file contents, subfolder " WORMS TROJAN LOGGERS" will be totally missing. Note: the folder " malware" contains some potentially malicious software including one legitimate dialer and Eicar virus test file( though not really viruses), but they will not execute and even if executed they will not harm ur system but still if u are more carefull u can try in VM or other such environment. I am using IZArc install version, Version 3.7 build 1430. How can I contact support. I sent a mail at email@example.com, no reply. Posted here on the forums, no reply. It,s not a good feeling.