MySQL Error 1062

[lowheartrate]

When new users try to register on my site for some reason it provides them with a weird error on their screen and they don't get registered into the site. I am not sure what this is about but would like to get this fixed as soon as possible as it is a very big inconvenience on my part. 

Here is a screenshot of the error that users are receiving upon registering on the site:

[.m.]

see replies here

[Jones H]

In general you should disable all plugins, especially when the mybb board is newly installed before running the merge system.