Wow, thanks for pointing that out. It looks like I encrypted that file when I should not have.
Forgive me, however it was handy to simply upload it to your server so you now have it. I just emailed you a copy also.
For others that have an encrypted version of /www/admin/plugins/RevMax/lib/RevMax.inc.php and would like to make changes or simply have it unencrypted, see the attached file.
I have updated the download package on the server for any that want the latest including a file that was missing in 2checkout payments.