Open VI Reference Error 1000

[MF]

Here is the problem:

I am opening a VI (we will call SubVI) through "Open VI Reference" and running the VI in parallel with the VI (MainVI) that I am opening it from. When I run the MainVI using "Run when Opened", I get a Error 1000 and the SubVI freezes. I break out using ctrl-period. Then I start it up from within LabVIEW and the Error 1000 does not appear. Does anyone have an idea of what is going on? Thanks.

[tst]

I'm a bit unclear as to what your setup is. I suggest you post an example which will help clear it.

As a guess, error 1000 means "The VI is not in a state compatible with this operation". If the subVI is the one set to be run when opened, maybe calling it dynamically is what causes the problem.