This appears to be a known issue with the plugin, I was wondering if anyone found a solution/workaround
I ended up resolving my issues by not using data_url param on the camera plugin. I then included another plugin to convert the data file to base64 encoded string so I could upload the image to parse.
full source and repo here aaronksaunders/Ionic-CameraTest6Plus http://bit.ly/1IDKyg4
complete blog post explaining what I did and why, more details then included in the GitHub Repo