Error with SharePoint 2010 TaxonomyPicker.ascx

I found error in event log with machine has a SharePoint 2010 error is:


Load control template file /_controltemplates/TaxonomyPicker.ascx failed: Could not load type  'Microsoft.SharePoint.Portal.WebControls.TaxonomyPicker' from assembly 'Microsoft.SharePoint.Portal, Version=14.0.0.0, Culture=neutral,  PublicKeyToken=71e9bce111e9429c'.


Solution:

1. open file /14/ControlTemplates/TaxonomyPicker.ascx and replace , and replace with a comma. (decoded value)
2.  After updating service pack this solution not applicable SharePoint used another control and the above error still appear. You need to remove this file to unknown extension like TaxonomyPicker.ascx_  so that we do not try to recompile it each time the AppPool is started. T