Hi,
Thanks for including the file - I've just opened it on my setup here, and it immediately opens with .... 4 bars per line (or in other-speak, 4 measures per system), and they're locked, so it looks like your settings for 4 bars per line "took".
I've also just played around with it, and was able to get the 5454 layout that you wanted (attached) by using the "Stay with previous measure" locks. Please see if it looks ok for you in Page View (same view you get when setting Layout/Page Layout/Bars Per line).
The only thing I noticed that's unusual is that the margins are set quite small (in millimeters), and I'm wondering if that has some effect on what you're seeing due to the printer driver. Composer uses the actual printer driver to give you true wysiwig viewing in Page Layout/View. It may be that the printer prefers another unit of measure, or that the driver needs to be updated.
If the above ruminations and attached file don't fix the problem, please let me know. I can't think of anything else at the moment, but if needed I'll pull out a bigger shovel
ttfn,
Sherry
Planxty George Brabazon5454.not