I'm curious if you guys used the launcher or auto updater? I installed a new launcher and the upgrade to ES 1.3.26 worked just fine (functionality and version number). Perhaps this issue affected only those who used the auto updater?
Download the new launcher from the dashboard and install the zip file. Proceed through the usual installation stuff. Report back what you discover. If the launcher version works fine, then we know the auto updater version needs a fix.
Thanks for the heads up on this. We have confirmed that there is some issue with the auto updater button from the backend. For temporary solution kindly use the launcher to update the easysocial to the latest version. We are sorry for the inconvenience caused.