I had a click box today that went to a url, pretty straight forward.
The URL existed, and verfied it before testing. However once I tested the project, it would not for the live of my work. Even though the URL was 100% right when it popped up in the new window. I would simply copy the URL and then paste it into a new window and it was fine.
I played around with this for an hour and found that somehow the URL when I copied it from the URL box in captivate to the browse had some mysterios '??' in it...eg www.google???.com I simply removed that in the URL and copied and pasted that back into the URL box in captivate. Then it worked perfectly.
Just thought I might share just in case someone ended up in the same boat.
Thanks very generous of you to bring this up for other users.
Personally, I haven't encountered this yet.
Hope this thread proves helpful.
Good luck for your project.