2.3B Breaks Yosemite 10.10.2 Applications
 

Although the current Display link 2.3Beta works well with Yosemite, I can confirm that the DisplayLink drivers break several graphics applications under OS X 10.10.2 (14C78c) both on a Late 2011 MacBook Pro and a Mid 2012 MacBook Air.

These include
iPhoto
Preview
Keynote
Yojimbo

They also break the screen saver on the non Displaylink monitors but it works fine on the DisplayLink monitor.

When I uninstall the DisplayLink software all the above applications return to their normal function as advertised.