UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/50.0.2661.75 Safari/537.36

Steps to reproduce the problem:
1. Take heap snapshot
2. Once snapshot is complete, attempt to save it to local directory
3. Saving process hangs - says "Saving...0%"

What is the expected behavior?
I'd expect it to successfully save the snapshot.

What went wrong?
I'm seeing snapshot size on disk as Zero bytes and on inspection the file is empty. 

Did this work before? N/A 

Chrome version: 50.0.2661.75  Channel: n/a
OS Version: OS X 10.11.4
Flash Version: Shockwave Flash 21.0 r0

I'm able to save other files to the target directory from the browser so I don't think it's a local permission issue.

I also tried the same thing on Version 52.0.2735.0 canary (64-bit). Interestingly the saving process completes on Canary however the same problem remains that the on-disk size is Zero bytes.