You are likely using a Windows server with very few Perl modules, or a *nix server with few Perl modules and weird paths.
In Beta 2, I plan to do the following to help with this:
- Include all the pure-Perl modules (Archive::Tar is the only one at the moment) so you can use these.
- Check the path ENV variable and look for the binary compression methods.
- Provide support for Windows compression methods. (Hopefully Windows comes with a command line compression tool that I could use)
(untested) As for now, you'll want to grab Archive::Tar from CPAN. Make a Modules/Archive directory and add the file there. Then you'll need to put something like
push(@INC, './Modules/Archive');
in the Backup pl file.
Of course, if this is your own server, you could add whatever module/program you want to do the compression. Just check what's supported in my first post if this is the case.