That "languagelevel known not" is odd. Neodeist also caught the fact that it's a Flexisign application. Very strange, because I viewed the use of ghosteater's vectors on a commenter's site, and there was the Celtic knot being used as a pendant on an illustration of an alien being. Looks like he found a workaround, too, but just didn't mention it.

Mike (mwenz) mentions using Acrobat Pro to convert. I don't have that program, but a graphic designer friend of mine uses it often. I might have to call on her as backup

Thanks, everyone. No software can cover everything, but it's nice to know what the underlying problem is and a potential solution.