Provide a different way for creating library shortcuts on Launcher homescreens.
At present the "Create Shortcut" option does not appear to work with the Nova and Regina launchers (at least).
Try Lightening Launcher... its crazy customisable... should be stock for android
Certainly with the Nova launcher this was an issue with that launcher which is now fixed. :-)
Further testing appears to indicate that the problem at least with the Nova launcher was caused by a recent update to that launcher. Therefore there does not appear to be anything that Memento needs to do. :-)