Hi Allen,
I have set the settings according to the help (I gave access permission to user "Administrator" (under this account I am logged in and TC runs under it) as well as user "tester" (under this account I want to run Firefox, its not domain account, just account on local machine)), but no help. The problem still remains. I don't think that this caused the problem, because when I previously ran Internet Explorer under "tester" account without those modifications, the page content was visible normally (["Page"](*)). I think its easy to reproduce the problem, just create user account with limited rights and try TestedApps.Firefox.RunAs under this account (I am trying it on XP). It happened on 2 computers I have tried it on.
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Tomáš Pánik
Quality Assurance Specialist
Customer Services
AVG Technologies CZ, s.r.o.
email: tomas.panik@avg.com