Zoho Campaign: Edit Contact: Grey Screen

Zoho Campaign: Edit Contact: Grey Screen

We have a campaign that a colleague set up.  I've been adding existing contacts to it without a problem.  When I go to 
the campaign and try to edit one of the associated contacts (by clicking the edit link)  The dialog box appears but it, and the whole window are dark grey'd out.  It I hit the browser back page button, my previous pate is grey and any other Zoho pages I try to display.

I've gotten this in Safari and Firefox.

Babs