I am used to helping users troubleshoot blank pages in their Crystal Reports. The usual culprits are blank report footers or group footers that need to be suppressed. Occasionally there is a page break that isn’t put in correctly. But I recently had one that I had not seen before. In preview the report showed 3 pages. But if the report was printed there were double the number of pages, with a blank page between each printed page. The same doubling would happen when it was exported to a PDF.
What I found was an image object (an OLE object) that was just a hair wider than the printable area on the page. In preview this would show as a white space to the right of the printed page, which was easy to overlook. It also didn’t affect the page count. But when printed or exported to PDF it would alternate printed and blank pages and double the page count. Once the OLE object was moved to within the printable area the blank pages went away.
This surprised me because normal CR objects that have a static size (fields, charts, boxes, etc) are just truncated if they stretch to the right too far. The only object that I knew of that could generate these pages to the right were cross-tabs, because their width is dynamic. So if you have a mysterious extra page in your report this is one more thing to check.