Greetings.
After installing the Multihack files I was still getting the "compilation error". What i did was open up the ultimatebb.cgi file and look at the code, I noticed something diferent around line 578, after modifying it it looked like this:
if ($vars_chat{Invite}) {
if ($ubb eq 'newinvite') {
&RequireCode("$vars_config{CGIPath}/ubb_chat.cgi");
&invite_form;
exit(0);
}
if ($ubb eq 'invite') {
&GetOrPost("POST");
&RequireCode("$vars_config{CGIPath}/ubb_chat.cgi");
&invite;
exit(0);
}
}
if ($ubb eq 'msg') {
&RequireCode("$vars_config{CGIPath}/ubb_msg.cgi");
&im_form;
exit(0);
}
when you look at your code, you'll find something after "&invite", what I did was delete it, and it works now.
I hope I was of help to somebody.
remember your code should look like that after you delete what is after "&invite"
Good Luck