This is Lolly again. For some unknown reason, without doing ANYTHING, not even rebooting, the print to pdf function is working fine now. Gremlins in the computer again????? Totally bizarre!
If you should run into this problem again, try and gather as much information as possible. For example, "I have a found set of 20 records that won't work, but if I find 15 records, it does work." In other words, it may not be "Gremlins" in the computer. :-)