I was having the same problem with updating Photo album plugin. Was watching this topic for a while, waiting for new 4.4.1 version to fix the problem. Finally it is here, but… I cannot install WP update either!! Getting error:
Unpacking the update…
Verifying the unpacked files…
The update could not be unpacked
Installation Failed
Other people are having the same problem:
https://wordpress.org/support/topic/install-issue-would-not-unzip-file-never-seen-until-441
So, what you are saying is: we cannot update to 4.4.1 via admin panel and have to do it manually via FTP?