lots of problems upgrading to 2.3.1 - manager problems

Having spent 2 days with all kinds of problem trying to upgrade from 2.2.14 to 2.3.1 I have kind of managed it but must say I'm not impressed how difficult this is. I have now got more problems and wondered if anyone can help. I have two problems. Problem 1: when I try to edit any page in the manager, I get this error as soon as I click on any of the pages

Fatal error: Cannot redeclare class modTemplateVarInputRenderText in /home/user/public_html/sitename/core/model/modx/processors/element/tv/renders/mgr/input/text.class.php on line 10

Bizarrely, when I try to edit the homepage I don't get the above error but I get a javascript error I see in Firebug when I try to save it:

NS_ERROR_UNEXPECTED:
var url=parts.join('&');if(MODx.fireEvent('beforeLoadPage',url)){location.href=url;}

Any ideas?

Thanks

Christoph

Maybe a extra needs an update?

https://github.com/modxcms/revolution/issues/11630

Thanks! Just gone through the list, all seems OK except for codemirror and phpthumbof but both are marked as partially working and I can't see that causing the issue.

Quote from: fourroses666 at Sep 11, 2014, 10:08 AM

Maybe a extra needs an update?

https://github.com/modxcms/revolution/issues/11630

In the meantime, I have actually commented out the line 449

$className = include $p.'text.class.php';

in file core/model/modx/

which has solved the issue and I can't see a problem on the site, but something is obviously not right. Anyone?