Naming Issues on Character Creation

Hello,
I've tried creating character names with the Underscore, but the invalid name notice keeps coming up. The names I've tried creating are all valid names on the retail server, and they are not names that are being used in our private server so there should be no conflict. It seems there are other players here who have successfully created their character names with underscore, so I was wondering if this may be an issue that I am experiencing due to some other issue. I've tried searching on the forums, but it looks like there are no other posts related to this matter.

I appreciate any help or insight anyone has to offer. Thank you!

 

This is impossible due to config regexp changes. Regardless of what the official server allows, here the system detects the underscore as a special character, therefore, you can't possibly create a character with underscore. However, the matter has been forwarded to the devs and will be resolved soon.