Symptoms

After deploying a new package from "source" to "target", we saw the flowing error when opening the new forms.

Error: Could not load file or assembly 'K2Field.K2Forms.Controls.Literal' or one of its dependencies. The system cannot find the file specified
 

Diagnoses

The 'K2Field.K2Forms.Controls.Literal' is a control on the community site. (And does not come standard with K2) The control was not installed on the target environment. When trying to use that control in the "target environment", the assembly was not found, and threw the error.
 

Resolution

After installing the community literal control in the target environment, the issue was resolved.

http://community.k2.com/t5/K2-blackpearl/HTML-Literal/ba-p/80400