PDF App works fine on Acrobat 7 but doesn't work in Acrobat 8/9

Question

Hello,
I have a PDF application that has been working fine in Acrobat 7 for years (for a Fortune 50 company). We had to upgrade our environments to Acrobat 8/9 and the same app either HANGS or Shuts Down when opened in Acrobat 8/9 (Reader and Professional). When I timed some sections of the code, I got down to the following statement (Click action of a button):
xfa.host.resetData(Home.APHomeSF.somExpression)
Where Home is a subform on page 1 and APHomeSF is a subform within Home form. This statement takes a fraction of a second in Pro 7 but 18 seconds in Pro 8. The APHomeSF subform has a checkbox, text field, date field and a button. Even when I changed the reset statement to resetting ONLY the checkbox:
xfa.host.resetData(Home.APHomeSF.FCB.somExpression)
Pro 8 still took 18 secs to reset the data.  My question is that have any BASIC things changed in Acrobat 8/9 from Ver 7 that are deprecated or not supported, which may cause our application to take longer to run or just shut down.
I am using Livecycle Designer to edit the application. When I open the application in Livecyle and just save it, I get many "Argument mismatch in property or function argument" errors. Following is one of the places:
Generating PDF Document...
Font Service: Default font typeface is Myriad Pro.
Script failed (language is javascript; context is xfa[0].form[0].CopyContent[0].#subform[0].SPOA[0].SPOAdataRow[0])
script=viahScripts.noViahNulls();
var groupsArray = Builder.variables.soScript.getGroupsArray();
var name = CopyElementName.rawValue;  // PROBLEM LINE
Error: Argument mismatch in property or function argument
Now, when I delete the line "var name = CopyElementName.rawValue" with the comment PROBLEM LINE, the error goes away. CopyElementName is just a drop-down list.
I don't understand what is wrong in this line for it to cause the Argument mismatch error.
Any help will be appreciated.... THANKS!
Sunny

Answer 1

You should post this in the LiveCycle Designer forum.