Re: Grades not transferring for most students

Ok, so we're getting somewhere now. Ignore those first "Failed - Invalid context" traces. Those aren't the exceptions. What we're really concerned with is the exception that causes the task to fail. In this case, that's the:

Invalid context id specified context::instance_by_id()

message at the end of the task run (the point during execution which throws the exception).

This can only occur in certain circumstances: when the tool context id is either not an integer or is empty.

Can you attach the last few lines of the trace? This should show what the task was doing right before it failed, and it may include some more useful information, such as the tool id.

Thanks in advance!
Jake