The package could not be installed. PCLZIP_ERR_BAD_FORMAT (-10) : Unable to find End of Central Dir

[RESOLVED]: This issue was resolved while I was typing this message, but I'll post it anyway just for your reference.

I auto-updated 5 plugins. Everything updated fine except for Snapshot. Tried again after about 15 minutes, and then it update just fine.

Note: I always keep the latest version of WP installed. Today there was an update for WP (3.8), and I tried updating these plugins prior to upgrading, 4 of which updated fine, and also after upgrading. Snapshot was the only one that gave the error. [RESOLVED: I waited another 10 to 15 minutes and the auto-update worked.]

-- error message --

Downloading update from https://premium.wpmudev.org/wdp-un.php?action=download&key=458282888d8721edb958ecaffec2d2de6eeeeaae&pid=257…

Unpacking the update…

The package could not be installed. PCLZIP_ERR_BAD_FORMAT (-10) : Unable to find End of Central Dir Record signature

-- end of error message --