I have a InfoPath form template that I posted in a form library in
SharePoint. One of my coworkers cannot open a form, that lives in the form
library and is based on the template. She is the one who created the form
from the template months ago.

She gets a message that says "InfoPath cannot open the following
file:....InfoPath cannot open the form. To fix this problem, contact your
system administrator."

If I choose to show more details. The dialog box expands to say

"The form template is attempting to redirect itself to a different and
potentially unsafe location.

The form template is accessed through a redirection from a different domain,
which is not allowed because it could cause unsafe code to run on your
computer.

If you want to open this form template, copy it to a location within your
security domain."

What settings to I have to change in either the template or on my coworker's
machine so that she can open the documents in the form library?