I am new to Umbraco, learning it now because it was supplied as part of a full website redesign done by an outside firm.  So bear with me if I don't say all of this quite right...

I have a form that I believe was constructed in Contour.  It appears under the Content section of Umbraco, and has the icon of a folder.  When I click on this form, nothing happens.  It appears that Umbraco has locked up, and becomes totally unresponsive at that point.  No other page, macro, form, etc. will load once that item has been clicked.

I fear it is broken in some way, although it does perform as expected on the live website.  It is only through the Umbraco editing tools that it misbehaves.

How might I go about fixing such an issue?  Thank you.