Could you tell me how you got it installed? I have the same issue, no matter what I do, I can't get CB Subs main plugin installed. According to my host the php.ini file is correct, ftp has been off and on in global configuration and so on. I have no idea what to do. Really afraid that this is € 299,- down the drain, since I have it for almost a week, and can't seem to get it installed. Any help would be very much appreciated.
And yes, I have followed the instructions step by step, gone through the forum and faq. But can't seem to find any answer that works.