There are reports for a bug where the square icons created with version 1.1 cannot be deleted with the new version. We will check why it's happening and issue an update. For the time being you can either delete all shortcuts before updating, just to be sure, or, if you already updated and the issue affects you, delete all files of type contactXXX.desktop located in /home/user/.local/share/applications/ with FileBox or your favorite file manager. .local is a hidden folder and you have to enable hidden folders from the options. Next version (1.3) will have a failsafe 'Delete All' button but this should be available in about 2 weeks time.