Reporting tools-Issue adding or changing a label

I created a standard report in TDA version 2.when I click on preview after changing a label or adding a new label into the report, TDA gets frozen; consequently the report is never displayed. Is there a reason for this issue?
One more question, is there any option in TDA that will allow me to do the following:
I have some data coming with abreviations only; in order to send the report to end user, I want to show on the report the description of the abreviation; so in access the problem is very simple to solve. I used an If statement to replace the abbreviation for the appropriate description; how can I do the same thing in TDA? any help will be greatly appreciated.

There is already a CR for this issue (Internal reference CR52631) hopefully I will be able to fix this for the 2.1 release.