Error: Unable to load datalist. Conversion failed when converting from a character string to uniqueidentifier – Occurs in WebShell when using a custom data list to filter results on a page.

When working in CRM, users have the ability to create user-defined data lists to control the way information is displayed on a page or in a section of a page. CRM users may encounter the error above in WebShell when applying filters to a user-defined data list.
Download and install the latest patch, which contains all fixes from previous patches. If you are running an older version, download and install the latest version and then the patch. 

Environment

 3.0.516.42
 3.0.516, patch 55 ; 3.0.516, Service Pack 10

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