"How can I see the front panel of the subVI where error is taking place in order to locate the error?"
If the Front Panel of your target subVI was preserved (i.e. not removed) during the build process (as indicated in the 'VI Settings' tab of the Build Application dialog box), you could use the tool (or the method used by the tool) posted in a LAVA forum awhile back. It's at
http://forums.lavausergroup.org/index.php?showtopic=660
If the Front Panel of your target subVI was removed, you can't access it because it's not there.
You could rebuild the app, and this time change the setting to preserve the target subVI's front panel � or you can go back to your development version and do as Debonair has described.
As for why your built app isn't working, ma
ybe something in the following Knowledge Base item will help:
http://digital.ni.com/public.nsf/3efedde4322fef19862567740067f3cc/d26b50b17aa9c3fd86256f1f00661a49?OpenDocument
=====================================================
Fading out. " ... J. Arthur Rank on gong."