Commented Unassigned: SharePoint 2013: Dynamic operations can only be performed in homogenous AppDomain. [2610]

I am creating SharePoint 2013 timer job and I have following error: "Dynamic operations can only be performed in homogenous AppDomain." Is it possible to use this with SharePoint?
Comments: ** Comment from web user: tolppa **

Seems like dll should be 4.5 framework. No real issue, but builds using new .net versions would be nice.