Exception occurred. (Exception from HRESULT: 0x80020009 (DISP_E_EXCEPTION))

Cuando intentamos subir archivos a una Document Library de SharePoint 2010 nos da el siguiente mensaje:

Exception occurred. (Exception from HRESULT: 0x80020009 (DISP_E_EXCEPTION))

 

If some of you have come across this error and don't know how to fix it, I have found 2 possible fixes.

1. Recreate the site collection
2. Webtempcustom.xml file in the C:\Program Files\Common Files\Microsoft Shared\web server extensions\12\TEMPLATE\1033\XML directory was corrupt and it was causing the problem.

You can try to fix the xml file, but much easier just to re-create the site collection.