UserAgent: Mozilla/5.0 (X11; CrOS x86_64 8172.56.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.103 Safari/537.36
Platform: 8172.56.0 (Official Build) stable-channel gnawty

Steps to reproduce the problem:
1. Download several photos from Google Photo album
2. Open the ZIP folder
3. Attempt to drag files into another folder (or the "Downloads" folder, thus unzipping them and making them available to upload elsewhere

What is the expected behavior?
In the past, the files unzipped with no problem.

What went wrong?
Now, I get a message that says, "An operation is taking longer than expected. Do you want to abort it?"  It keeps reattempting the process even once I abort it.  In short, it keeps trying but the files never unzip.  I Powerwashed my Chromebook and it fixed the problem for a few days, but now it's happening again.  I have very few files in my "Downloads" folder, so it's not a storage issue.  And no, the file isn't password protected.  And the file names aren't in another language. 

Did this work before? Yes Until about three weeks ago. 

Chrome version: 51.0.2704.103  Channel: stable
OS Version: 8172.56.0
Flash Version: Shockwave Flash 22.0 r0

Even a Powerwash doesn't fix the problem long term.  After the Powerwash, unzipping worked for a few days...but then it stopped.  Random...but I did disable the Flash player plugin in the Chrome browser this afternoon.  I can't imagine that would impact the unzipping process, but FYI.  And I'm not using a separate app or extension or plugin to unzip the files, either.