i'm trying to use the stamp tool to place a building foot print on terrain but it crashes everytime.

i would select the stamp and as soon as i pick the footprint, sketchup crashes.

i'm using sketchup 6.4 or the most recent update. this has never happened before.

is there a way to repair sandbox or something? or do i need to un-install and then re-install all of sketchup?

thanks.