Solved
Attempting to download the userguide to the SD results in a "move: file not found" error
Attempting to download the userguide to the SD results in a "move: file not found" error with a path to "cache/tmp/<random number.>"
I have tried deleting the cache directory, and the app recreates it when trying to download the userguide, but it doesn't appear to be able to create the randomly numbered directory.
v4.9u4 on Android 4.2.2.
