I get this error due to a addon that I can't uninstall

[Puntocom]

I got this error in the server log:

call_user_func(xPortal_Install::uninstallCode) [<a href='function.call-user-func'>function.call-user-func</a>]: First argument is expected to be a valid callback

library/XenForo/DataWriter/AddOn.php:148

xPortal still appears in Options but the addon is uninstalled. Any idea how can I get rid of this problem? I have re-uploaded library/ files of XF Beta 6 but it hasn't worked.

Now when I press F5 to reload in the forum index, sometimes I get:

The following error occurred

The server responded with an error. The error message is in the console.

Update: I don't know if the problem is due to the plugin.

 

[Jake Bunce]

Make sure you uninstall the addon before removing its files.

 

[Puntocom]

Make sure you uninstall the addon before removing its files.

I removed the addon uninstalling from ACP (Beta 6)

 

[Jake Bunce]

Have you contacted the author of xPortal about this? That would probably be best.

 

[Puntocom]

Yes, anyway, my users don't have this problem, the error log was caused only when trying to uninstall.

I'm not sure what has caused the problem. Clicking repeatedly on Forums I get this sometimes:

 

[a legacy reborn]

You should go to your database and remove any references to xPortal. Also if anything still shows in the acp options I recommend going to debug mode and deleting those options. If I am wrong correct me because I am not 100% sure I understand what you are asking. Above error, happens on another forum I visit, but I don't think they ever used xPortal.

 

[Puntocom]

The problem has been solved reverting some templates, it has nothing to do with the addon, thanks!