http://[[*urltv]]
If you have specified that the TV is a URL type, then there is a drop-down to select what type of URL it is.
Hm. I don't seem to have that problem. Can you provide an example of a URL that is giving you trouble, or is it any URL at all? What browser are you using?
That's starting to sound like a mod_security issue.
You need to ask your hosting tech support to check their mod_security logs at the time the operation is failing.
That URL doesn't cause me any problems, in any browser or using text or url type TVs.
Can you save a chunk with just the URL in it?