For some background, this is related to Passing IEnumerable Variables into .NET from ColdFusion. I\'ve changed the code to use a list instead, and have made progress, but contin
(From the comments)
Believe it or not it is just an assembly path problem. You have to use both files in the assembly list, not just CoStarUtilities, ie:
CoStarUtilities
<cfset eventCollection = CreateObject(".net" , "CoStar.Utilities.VideoWall.VideoWallEventActivityCollection" , Paths ) />