I am using the Online version of SH3D on a Mac, running OS X 10.10.3. I just installed the offline version and want to save my .sh3d file so that I can use it in the offline version.

When I click Export, the system asks for the name and location, but then gives me the error "Can't save sh3d file".

This is Java version 1.8.0_45 and here is the screenshot from the About screen in case there is anything else you need to know there http://screencast.com/t/mY5awTHV