Exporter Node causes a DirectoryNotFoundException if complete path does not exist.

[Matt D]

Steps to reproduce: 1. Set the export path to a subdirectory of a directory that doesn't exist. For example: "Data/Bundles" 2. Click "Create Directory"

Occurred on Dev but I believe it will be happening on older versions.

[Hiroki Omae]

fix issue #20

→ <<cset 3534d1fe629e>>