go to this website address. windows central won't let me post a link so copy and paste in to browser to help them figure out what's wrong.
answers.microsoft.com/en-us/insider/forum/insider_wintp-insider_install/build-10136-running-out-of-space-during-install/b36b1a67-d26c-4220-b6b5-6540d3678016
Quote from this page:
Build 10136: Running out of space during install? Please post here
***Update 2015.06.18 at 3:45pm PST***
We have confirmed this is an issue. We are tracking down the specific cause and are requesting logs as noted below. It appears to be affecting devices with 4GB or less disk space. Please post up and share logs as they will be extremely helpful in allowing us to fully diagnose the issue.
Thank you!