Hello Chad,
This is a semi-public forum so I'm not sure that you'd want to post your actual forms here. I'd recommend submitting specific forms related questions as a support ticket in our community portal or via email at [email protected].
That being said, I believe the issue is that on your main form the field $F{ZAITYPE} is passed to the sub-report parameter #MTLTYPE but the parameter on the sub-report is defined as #MLTTYPE (just a typo) and you're using that parameter in the where clause of your sub-report query so it's likely returning 0 results and producing no pages.
Thanks!
Albert