I use Linux Kubuntu and when I need to unzip the rar file via Ark, it often doesn't work. However, the Rar file is fine on Windows will unpack correctly. Do you have any tips on how to expand rar? Quiet in a Linux terminal.
install unrar and then unpack as follows:
unrar e file.rar
with the parameter "l" it is possible to view the contents of the archive
unrar l file.rar