Update 1.3.17 to 1.3.20 frozen now easy social doesent work correct.

Hello,

i wanted to update Easysocial to the newest version.
I downloaded the update package here and load it in the package part with my ftp.
I started the installation in the Backend of Easysocial.
In step 4 the Installation stucked at 20 %.
Now it shows the correct version in the Backend of Easysocial, but it doesent work.
Buttons are not clickable, and the history doesent load older things by scrolling down and so on.
Need help...