Hi John,
First, thank you for sharing your experience.
What I did (and usually do in these cases) is have one standard report. Then, based on a certain setting (in my case it is c_obj001.xml), copy the custom version of the report (.FRX/.FRT files) to the user server. And at run time, the application produces either a standard report or a custom version (specified in the c_obj001.xml).

>Hi Dmitry, I had similar issues when trying to adapt a report to different clients, so my best option was to have a predefined report for each case, for example: L4ClientWithSummary, L4ClientNoSummary, LegalClientWithSummary, LegalClientNoSummary, LetterClientWithSummary, LetterClientNoSummary, etc. In runtime you will target the proper one. I know this is more work to do and you already have a programmatic option, but this will help to personalize even more each report.
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>>Hi,
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>>I have a report - one-page work order. The code of the program changes the size of the paper from 8.5" x 11" to A4. What happens when I do that, the page prints ok. But then immediately afterwards, a blank page is printed.
>I understand that A4 is a little narrower and a little longer page.
>Where in the report designed should I look to do away with the second, blank page?
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>TIA