I'm a Nightly tester and have come across this problem with NoScript in the Nightly Build of Firefox (30.0a1)
When I open Nightly and then go to file (menu bar) and click "New e10 window" (to get e10 go to about:config and search "browser.tabs.remote" with no quotes and change the value to true)
I then see my start page in which I cannot search and I don't see the logos/titles of my search engines.
Steps to reproduce:
open nightly
make sure you have browser.tabs.remote set to true in about:config and have NoScript installed
click file then click "open new e10 window"
then proceed to start page.