I believe I have found a bug with the PDF export on the grid in Q2 2015 and onwards. I have reproduced this bug using the VS2015 PDF Export demo supplied with the Kendo install.
In order to replicate this bug, please enable bundling optimizations in the BundleConfig class:
Grid export to PDF will no longer work - it will fail with an error about the font:
"Cannot load font from http://localhost/Content/kendo/fonts/DejaVu/DejaVuSans-Bold.ttf?v=1.1"
It would seem that the path is working from the kendo folder and excluding the version number? The actual path to the font file should be:
The export works without issue when optimizations are disabled.