Hello

I just started ramping up with the K2 (using 4.7 version) using the tutorials. I have been able to complete the basic version and build smart objects, views, smart forms and work flow. 

However, with the extended version as I added features of Email events and rework, I started getting the following error in Deploy Workflow:

"Could not load file or assemply 'System.Core, Version=3.5.0.0, Culture=neutral, publicKeyToken=null" or its dependencies. The system cannot fid the file specified."

I believe I have added all the required items to build the demo. Please advise how I shoudl proceed to fix such issues?