ISSUE: After the latest version of Nitro Pro was installed, PDFs do not auto detect that a page within a document is landscape (or portrait) and print it out accordingly. All pages either print out landscape or portrait depending on what you manually select.
PDFs will no longer auto switch between landscape and portrait when printing
RESOLUTION:
1. Go to File
2. Click on Print
3. Click on Page Scaling
4. Tick the "Use PDF page size to select paper source"
You can then print your document and the page size will automatically detect. This setting will remain ticked for future documents.