Selection disappearing when selecting sweep surface tool
I'm having a problem with my surface selection deselecting itself when I click on the sweep surface tool.
I have a simple cube and select 2 opposite sides with the select faces tool. I then click the sweep surface tool and continue my modeling.
Then if I select more surfaces and then click the sweep surface tool again my selection deselects itself.
I'm not sure what's going on here. I'm following a beginner video tutorial and they are able to this: http://www.geekatplay.com/tutorials/hexagon/one/
Any help would be greatly appreciated :)
I am using Hexagon 18.104.22.168 on Mac OS X 10.7.4.