Reply To: Some elements won't print?

I don’t have any great answers I’m afraid. I have found problems occasionally with blending modes in InDesign causing things to drop out, but not usually just gradients. I would do as Justin suggested and make sure the PDF is flattened. Also an office printer will prefer an RGB file, as it will convert to RGB before then converting again to CMYK otherwise. You could try outputting with different Acrobat compatibility settings, and making the blue a solid colour.

These are just troubleshooting methods you will probably have tried anyway, I’m afraid I don’t have a hard answer for you.