Output of Labels off suddenly

[Woodward]

After several years of using the same database, I recently printed 17 pages of labels and after the first two pages, the labels were a bit lower on each consecutive page. Fifteen of the 17 pages were unusable. I tried creating a new layout with Avery Label 5160, with the same field names, but it did the same thing. I can't figure out why, after all these years, the layout would be off now. I am using FM Pro 5 v.1 and Windows 98.

The only way I was able to get the labels printed was to print two pages at a time.