Just loaded up the new IDE and have no problems loading example code. However when I go to create new sketch and I verify/save it I get a yellow box appear on the right hand side to say 'Error when saving sketch "
If I take one of the examples and duplicate it and then cut my code into it the sketch_copy it will save. I suspect it has little to do with the IDE but more about my permission rights as I have tried it on Windows and OSX platform.
I am also unable to rename the example copy file which again suggests permission rights issues
I can upload custom libraries and that appears to work fine
Windows 7 using Chrome
OSX ElCapitan using Chrome