Could NoScript be causing this captcha problem?

[Leaper]

I use Firefox 3.6.28. A website I frequent uses javascript (apparently) to show a captcha to log in. Very suddenly, that captcha would not display. Clicking on the "Audio" link [javascript:xcap.play_audio()] causes nothing to happen. Clicking on the "New Code" link [(javascript:xcap.refresh_image()] causes a blank HTML image placeholder to appear, then collapse in on itself (there is no blank space where the captcha should be; it is collapsed).

As far as I can tell, NoScript is allowing everything relevant on that site. I turn on the notifications and reload the page, and no notification appears. Is there anything else NoScript could be blocking? If so, how do I find it? I marked this site as trusted, so what could be being barred?

Thanks for any help you can give; at least I hope to clear NoScript from "blame" if it's not.

[Tom T.]

It would be a lot easier if the URL were posted, so that we could see it for ourselves, but in general, as said here,

Visual confirmation codes often require allowing additional script, such as api.recaptcha.net, or other providers of CAPTCHAs.
Some of these may use Flash video or <IFRAME>, which must be temp-allowed.

Look in the "Blocked Objects" section of the NoScript menu for such items.

Else, please post the address of the site. If it's confidential, PM it to me, though I'm about to log off, but should be back in 24 hours or less.