WKWebview : Ignoring request to load this main resource because it is outside the sandbox

I'm trying to load a local file from my Documents directory into a WebView. Works fine on the simulated but throws this "out of the sandbox" error when I run it on my iPad. It looks like this problem has been mentioned here before. Has there yet been a solution?

Oops never mind, it was my fault. I was hardcoding URLs to the Documents folder without realizing that they can change from runtime to runtime. Fixed now.

WKWebview : Ignoring request to load this main resource because it is outside the sandbox
 
 
Q