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Please Help, cannot create Lookup with Picker Column, "Unknown Error"


I have installed the Lookup with Picker Column on a single Site Collection. When I attempt to create the column in my list, I receive the following error in SharePoint - "Unknown Error"
Lookup at the Application Event Log on the server I see:
"Load control template file /_controltemplates/ControlTemplates_LookupWithPicker.ascx failed: Could not load file or assembly 'LookupWithPicker, Version=, Culture=neutral, PublicKeyToken=e1eb4ce568bda77d' or one of its dependencies. The system cannot find the file specified.
I also see:
"Load control template file /_controltemplates/LookupFieldWithPickerEditor.ascx failed: The resource object with key 'lookupWithPickerChooseSearchFieldsLabel' was not found.
"Load control template file /_controltemplates/LookupWithPicker.ascx failed: Could not load the assembly 'LookupWithPicker, Version=, Culture=neutral, PublicKeyToken=e1eb4ce568bda77d'. Make sure that it is compiled before accessing the page."


tward3017 wrote Apr 4, 2011 at 8:24 PM

copy the dll into the Assembly directory and also add <SafeControl Assembly="LookupWithPicker, Version=, Culture=neutral, PublicKeyToken=e1eb4ce568bda77d" Namespace="LookupWithPicker" TypeName="*" Safe="True" /> to your web.config

wrote Feb 14, 2013 at 12:06 AM