Internet Explorer may show an error message like one of these:
This can occur when testing an HTTPS URL that has a self-signed or invalid security certificate.
There is a lot of information on how to disable these warnings, but none of the methods worked for us on Windows 7 with Internet Explorer 8 (8.0.7600.16385).
Unfortunately this manual click on “Continue to this website (not recommended)” cannot be automated with Squish’s nativeType() function because Internet Explorer ignores sending Enter and Return key presses (which in theory could be used for opening the “Continue to this website (not recommended)” link).
The best solution is probably to correct the certificate problem in Internet Explorer, possibly by obtaining and using a valid security certificate for the website.