UPDATE: this issue has been solved and one shall not encounter the problem described below.
We have encountered problem when running orchestration manually from the orchestration detail page:
error message detail: "Error. [Task 0] Job task is different from orchestration task"
We are working on the fix of the problem which should be released within a short while.
Temporal workaround: if you are experiencing such a problem, you can fix it by resaving the orchestration tasks(Edit Tasks->Save).
All other orchestration features are working normally. We are sorry for any inconvenience.