Hi Tim,
With the beta for 1.8.1 it really helped with me saving the images on my main machine. However when I attempt to run the hdiutil command mount to my webserver I am getting this message " libc++abi.dylib: terminate called throwing an exception. When I checked on the forums it shows another user having the same issue so I went to internet recovery mode to update however the terminal is still the older version. It is also showing an error stating NSINternalInconsistencyexception/users/tperfitt/documents/projects/imagr/Imagr/main.m:40()main