Printout is completely blank

Just used the software for the first time about 1 month ago. Input a 4-page score and got a printout with no problem. A week later, opened the file and added some dynamics and adjusted layout. But this time when I printed, all the pages are blank - no staves, no notes, no words, nothing. I have checked to see if somehow the font color was accidentally changed to white, but there is no issue there. Is my file corrupted somehow?