When unzipping the Blender 2.77 download file (blender-2.77-OSX_10.6-x86_64.zip) I get an error message "Could not extract the file 'blender.app/Contents/Resources/2.77/python/lib/python3.5/pycache/future.cpython-35.pyc': The file could not be opened".
If I click 'continue' I get a series of 'could not be opened' errors for what I assume is every file in the python 3.5 library.
I've not been able to find any information on this and don't see anywhere to ask about this at blender.org. I've not had this problem with previous installations of Blender.
I'm using a 2008 iMac running OSX Yosemite (10.10.5). Any thoughts?