Error: 'nil' does not exist...

[Bill Thorpe]

I just tried to upgrade from 4.1.0 to 4.2.2 but the generated C# code compiles with an error:

The name 'nil' does not exist in the class or namespace...

In 4.1.0 the generated function is...
internal override void ControlFailed(ControlContext context)
{
  context.PushState(MainMap.Wait);
  context.State.Entry(context);
  return;
}

In 4.2.2 the generated function is...
internal override void ControlFailed(ControlContext context)
{

  context.State = nil;
  context.PushState(MainMap.Wait);
  context.State.Entry(context);
  return;
}

The compiler is complaining about the line "context.State = nil;".

Am I doing something wrong?

Thanks,
Bill

[Bill Thorpe]

I'm still having this problem.  Any suggestions?

Thanks,
Bill

[Charles Rapp]

Bill,

1. This is definitely an SMC bug. I have opened ticket 1347654 to track its correction.

2. As for a short-term work around, you could change your FSM to:

YourState
{
    ControlFailed
        FailedState/push(Wait)
        {}
}

FailedState
{
    // Handle pop transitions here.
}

This will get around the "context.State = nil" bug until release 4.3.0 gets out (RSN!).

Charles Rapp