QGIS » QGIS Application

In 2.2.0 I can load in custom SVG by placing a folder of them in C:\\Program Files\\QGIS Valmiera\\apps\\qgis\\svg. For example for vegetation fill patterns. But once trying to use them in Layer Properties, the software crashes either immediately upon selection, or when selecting another feature to style afterwards or upon OKaying the Layer Properties window.

I can work with these same custom SVGs (saved in the equivalent filepath) with complete success in 2.0.1.

If I set up the styling in 2.0.1 and then reopen in 2.2.0 it will read and display everything fine. However if I then try to change any of the SVG fills, even for any of the default ones, I once again get an immediate crash dump error and the software closes.

Please find one of my SVG files attached (for testing purposes only). I am working with them between 1:1000 and 1:15000 scale and I set the SVG texture width to 400 map units (I'm working in British National Grid, so these map units are meters).
I've also attached one of the dump files.