Why do i get an empty output if i connect a control to the connector pane ?

hello everyone..
i must admit the behaviour of the following program somewhat blew my mind and made me doubt whether i had ever understood anything about programming in labview.
please have a look at the attached vi and it's subvi. i probe the output of debug.vi (result path) two times. once when it is connected as an indicator on the connector pane and once when it is not. then i run test.vi.
the prize question:
why don't i get identical values?
in the case "result path" is connected i get an empty path at some point. in the case "result path" is not connected i always get a value, something i thought should always be the case. what is happening?
Attachments:
test.vi ‏8 KB
debug.vi ‏9 KB
StateMachineStates.ctl ‏5 KB

There are a lot of questionable conde constructs that make very little sense.
Where do you actually probe the output (the subVI does not seem have any output connectors assigned)
Are the indicators big enough to avoid wrapping?
Why is the browse option set to "existing files", however, you are building a path from it. This will invariably give you an illegal path.
Instead of all these local variables, use a single feedback node.
Please provide an exact step-by-step procedure on what we should do to reproduce your observations. How can you possibly get a value in an indicator if it is not connected to anything? 
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