This error can be related to plugin .zip files that don’t comply with WP standards. However, I’ve just double checked, and the files on our update server are correctly formatted.
Since no other users have reported this, it might be a local issue. A few threads suggest this error message can arise as a result of a disk space issue. That is, if your host has limited the amount of physical storage available to your account or WP install, this error might appear during updates.
You might double check with your host to determine the amount of space used vs. the amount of space available. You might also review this thread, just to make sure your local permissions are set properly.