Hi Cara Marris and welcome to this spot in cyberspace.
One of the things to know about Captivate in Recording is
that Captivate captures the screen at ALMOST the exact moment of
interaction. However, this means that in some instances e.g.
working on the web or a server based package, there is a slight
delay while the screen waits for the new information to upload.
This is what is causing the "white screen" capture. Personally, I
use manual capture in instances as mentioned above (prt scr) and
then position the mouse pointer manually in editing mode.
Hope this helps and stay well
Andrew