Here is something to consider in this beta - having the action trace able to be up prior to loading the IV.
I am running into a problem on an initial display of some fields that are in an overlay when I load the Initial Template.  It's very unpredictable, it happens about 90% of the time when I start up the IV, however within the IV, if I reload/clear globals, all the fields will show up.  Having the Action Trace available at load might help.  I feel it is a timing issue as I am changing the fields via LinkToField and SetWidgetColor in the Onload when the overlay is called.   I have played around with putting a short pause command in different places to get it to load properly, but without success.  I have a button on the display to refresh and it displays fine then.
I am running into a problem on an initial display of some fields that are in an overlay when I load the Initial Template.  It's very unpredictable, it happens about 90% of the time when I start up the IV, however within the IV, if I reload/clear globals, all the fields will show up.  Having the Action Trace available at load might help.  I feel it is a timing issue as I am changing the fields via LinkToField and SetWidgetColor in the Onload when the overlay is called.   I have played around with putting a short pause command in different places to get it to load properly, but without success.  I have a button on the display to refresh and it displays fine then.