Solution:
Apply the following solutions in order to resolve the error message:
1. Make sure that Revit 2014 Service Pack 1 is installed, apply it if not and test the Cloud rendering feature again
2. Check if there are any extended characters in the Windows user name (C:\users\<username>). If there are, create a new windows account without any such characters, log in using the newly created account and try using the Cloud rendering feature again
3. The message can sometimes display when attempting to use a file from older Revit versions containing PRC content - if this is the case try first removing RPC content and check if this solves the issue. Then try inserting new and updated versions of the content if available
4. Check the names of the views that you are requesting for render and make sure that there are no special characters contained in the view names (i.e. square brackets, colon symbol, semicolon symbol, etc...)
Klaus Schumann
Revit Specialist