Config data refnums invalidated by for loop

I have found the following problem with LabVIEW 7.0. This only occurs when running the application as built with the application builder and does not appear to be a problem in the development environment.
Given an open refnum for a config file one can loop through several read key operations while passing the data and the refnum to outputs on the for loop. If you disable indexing on the refnum output of the for loop you should get a usable refnum out. What happens instead when you try to close the refnum is an error indicating that the refnum is invalid. If you simply route the refnum around the loop avoiding the for loop output altogether this doesn't happen. It appears that somehow, going through the indexing output of the f
or loop invalidates or changes the refnum when in a built application using the runtime.
If anyone can reproduce this or prove me wrong it would be helpful. This bug cost me days of chasing down why my "major app" would only work when in development but fail when built. The lack of debug capability in a built app of course leant to the effort that it took to track this down.
Thanks,

Hello, i'm french so scuse for my writting...
I don't find where put this question so i writte here.
I want to do a soft who's objective is to writte config data (open config data + write key + close..).
you can find it in the join piece.
this soft run correctly but when i do an exe with the application builder, when i try to run the exe, that saying me error 7 about the Nex file in Open config data...
How can i solve this problem???
Tanks for all....
Attachments:
chconfexe.vi ‏32 KB

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