Problems when converting to pdf/printing

I have a problem when exporting to pdf/printing to pdf/printing my project. While in Omnigraffle everything looks just fine, after converting a lot of things look corrupted as can be seen in attached screenshots. Anything can be done with that?

It would be best if you could email that document to our Support Humans at omnigraffle@omnigroup.com, along with a detailed description of the bad results you get when converting to PDF.