>>FRX2Any DEMO is fully functional, so it is not a case. Does this happen only with one particular report, or with all of them, including reports from the demo?
>I tried 5-6 reports and have the same result. Report in the demo is pretty simple.
>What I am running is 10-15 reports in the loop, each of the report has 40+ pages.
>Before I used ADOBE pdfwriter driver and it was perfect.
>
>Does anybody knows if I can find a PDF 'driver' solution for Windows 7?

There are a zillion of gizmos to do just that - google is your friend :)
https://www.google.com/search?q=Print+to+PDF&rlz=1C1GTPM_enUS497US497&oq=print+to+pdf