1. Deploy Kaleo web.
2. Enable workflow for Document Library Document.
3. Upload a file to Document Library.
4. Go to My Workflow Tasks > Assign the task to yourself.
5. Click the task and edit the file. Upload a new version of the file and change the title.
6. Save it.
7. Click View icon.
8. Click the file and receive "The requested resource was not found."
This is not a problem in 6.1B3 and seems to only be a bug in 6.0.X.