I exported a Create (V 14.2.3, build 818) document as a PDF. I then opened it in Adobe Reader 9.1.0. There are two problems I have not been able to resolve.
1. Pages in the Create file are 11 x 14 (W x H, in inches), but appear as 8.5 x 11 in the PDF: the right side of the pages are truncated.
I have run into this problem on occasion also, when reate seems to not "remember" the page size. I go into the page settings, change it to some other page size, and then back to the page size I want, save and print. That has always fixed it for me.
2. The background colors from Create pages are ignored in Adobe Reader, where all page backgrounds are white.
In Create's Info Pannel, go to the View section and click on "Page Background > Print"