I offered a bounty on another person's question because I was facing exactly the same issue: Visual Studio 2013 Error: workflow "could not generate view for item".
In the meantime, I came up with the solution and posted it as an answer. My concern is, who gets rewarded for a bounty? Obviously, I cannot award myself so it's a pity to waste bounty reward. Theoretically, someone could literally copy my answer and earn bounty reward. This seems like a perfectly legitimate thing to do. What are your thoughts on this?