here is the simple trick to use vesta control panel file manager for free. Its not a crack but a simple hack.
here is what you have to do. Once you have installed vesta control panel successfully on server. Login to the server via SSH.
make sure you are root.
Open file /usr/local/vesta/conf/vesta.conf
at end of the file just enter the following
save the file, and that’s it!
you can now use file manager of vesta control panel for FREE!!