Update Issues

I updated the plugin about an hour ago and quit my browser/logged out of wp-admin. I quit and tried to reload with various browsers and I couldn't get my self-hosted site to load at all, it would just hang. I also couldn't login to my wp-admin for the site, same hang. I went into /wp-content/plugins/ folder through ftp and deleted the "sharebox" plugin and the site immediately loaded and I was able to login to wp-admin instantly as well. I want to reinstall the Floating Social plugin, but want to make sure that doesn't happen again.

Does anyone have any idea why this may have happened? Thanks.