You have bottom-left screen corner enabled.
It is enabled, but the previous version works perfectly
Previous version is here: http://www.startisback.com/StartIsBackPlus_setup105.exe What behavior do you expect?
I expect that, as in the previous version (the one in the link), clicking the left button opens the menu "Startisback" while clicking with the right button in the lower left corner to open the options windows 8.1 [Startisback](//res.cloudinary.com/moot/image/upload/t_d3-gallery-s3/v1387780449/:startisback:s7lt:startisback.png.jpg)
To get that behavior, enable ‘Use advanced start button context menu’ on Appearance page
Thanks the problem is solved. I note that the version +1.5 20 Decembre 2013 if you turn on the lower left corner is no longer possible to access the menu of "Startisback". Thank you again.