[For 1.6] [Updated] Invitation System

[Whiteneo]

Hi, i am currently trying to make this plugin still work on mybb 1.8.15 but it appears i can't watch the profile of any user that used the invitation system to register. I receive this error.

MyBB has experienced an internal SQL error and cannot continue.

SQL Error:
1140 - In aggregated query without GROUP BY, expression #2 of SELECT list contains nonaggregated column 'users.mybb_invitecodes.createdby'; this is incompatible with sql_mode=only_full_group_by
Query:
SELECT COUNT(*) as count, createdby FROM mybb_invitecodes WHERE code='gUGJvACD'

That is due your server configuratios, you must update the plugin to your code server requeriments by php lines changes.

HELP ME I GET THIS ERROR

This plugin works on mybb 1.6.x series as thread marks on.

You have to verify if it works into mybb 1.8.x changing the compatibillity plugin lines from 16* to 18* or *.

But you have to be sure that it works fine or for testing purposals change that line into info plugin function at the begining of the file with a text editor, save it and try again. See if it work fine into non live environment before you install into a live board.

Cheers...