[Upgrading] Fails to login with correct info.

[Ali.]

I have just changed my server hosting website.
And Installed the forums and imported the database (contained all info of previous site).After this when I got to the board url it says

MyBB Internal Error
MyBB has experienced an internal error and cannot continue.

Error Type:
MyBB Error (42)
Error Message:
Your board has not yet been upgraded. Please do so before attempting to browse it.

And when I try to upgrade and enter the Login info it says invalid username specified.And I can't upgrade and forum is stuck since that.
Link in my sig.

Replies appreciated.
Ali.

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1500 visits not a single reply?????

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4200 viosits no reply?

[dragonexpert]

Most of those visits are bots, not actual users.

When I went to your forum to the upgrade page it says you still haven't deleted the file "lock" from the install directory. You need to do that.

[VoIP]

Dragon, its you either add the lock file (with no extension inside of install) or delete the installation folder. (Which I prefer too do)

[Ali.]

Dragonexpert should I remove lock file and send you username and password?

[VoIP]

Oh I read that wrong.
Remove the lock file extension and then go to /install folder to install the upgrade.

[Ali.]

Done, Dragon try now if you can?

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I can't.

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Error
Error
The username you have entered appears to be invalid.
MyBB © 2002-2014 MyBB Group
/home/u802256411/public_html/forums/install/resources///mention.lang.php does not exist

[dragonexpert]

That language file is not part of the default language files. Open inc/init.php. After the opening php tag do this:

define("NO_PLUGINS", 1);

Please post again if the issue about username invalid still persists.

Please do not PM us for support unless we specifically request to be PM'd certain information.

[Ali.]

OK Thanks and will let you know about further issues.

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That language file is not part of the default language files. Open inc/init.php. After the opening php tag do this:

define("NO_PLUGINS", 1);

Please post again if the issue about username invalid still persists.

Please do not PM us for support unless we specifically request to be PM'd certain information.

define("NO_PLUGINS", 1);

Where should I change (e.g line,etc)

[dragonexpert]

You just put that on the second line of inc/init.php. You don't need to edit anything else.

[Ali.]

Above MyBB 1.6??

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NOT WORKING.

You just put that on the second line of inc/init.php. You don't need to edit anything else.

I pasted and looks like

// Disallow direct access to this file for security reasons
if(!defined("IN_MYBB"))define("NO_PLUGINS", 1);