I am using Management Suite 9.5 SP2 and have created a custom report using 'Antivirus dashboard' as base. I have added a couple of additional data sources with, the data being displayed in additional tables. Although I dont believe this to be the source of the issue. I am using theme USLetterPortrait.rdlx-theme.
When I preview the report to PDF or schedule email distribution to PDF I get a blank page between the content if its over more than one page e.g. page one displays a couple of tables, page two is blank, the third page contains 2 graphs and the fourth page is blank. There is a second blank page if there is only one page of content so the issue seems to be a blank page is appended to any page of content. Im sure this is simple configuraiton issue but I can see it anywhere.
I figured this out in the end. The answer simple; the 'ReportContentPlaceHolder' width was set to wide for the 'PageSize' causing the issue, i redused the 'ReportContentPlaceHolder' in line with the 'PageSize' and it resolved the issue.