Compiler Warning (level 1) CS3013

Added modules must be marked with the CLSCompliant attribute to match the assembly

A module that was compiled with the /target:module compiler option was added to a compilation with /addmodule. However, the module's compliance with the Common Language Specification (CLS) does not agree with the CLS state of the current compilation.

CLS compliance is indicated with the module attribute. For example, [module:CLSCompliant(true)] indicates that the module is CLS compliant, and [module:CLSCompliant(false)] indicates that the module is not CLS compliant. The default is [module:CLSCompliant(false)]. For more information on the CLS, see Common Language Specification.