4.0 is not
compatible with Windows Vista. Instead you need todownload 4.0.1 trial
and use the key that you obtained with 4.0. Otherwise you'll get an
error message with Code 1904 which is about not able to register
. I've Office 2007 installed on this Vista machine
so that might be the cause of error but Camtasia's tech support told me 4.0.1 is
compatible with Vista and should be installed instead. Readthis thread
for more details.
screencasts that have been published so far and more to come.