I can't seem to get PDF Export to work properly at any size larger than A4 such as 11x17". It turns up properly in print preview but the PDF Generated is blank outside the area that would fit on an A4.
The page size is set Ledger under current drawing options. I'm using Mac OS if that makes a difference.
I have played around a bit with ledger format and PDF Export. I have found out that there seems to be a problem with paper orientation. If you want a landscape format you still have to select portrait in the Current Drawing Preferences and in Print Preview get drawing and paper sheet aligned at the lower left corner.