Can anyone suggest where to start looking for a solution to this problem? Googling hasn't turned up any recent problems and I've tried the suggested fixes with no luck.
Trying to purchase from various websites using Firefox, the Verified by Visa window appears but is blank, effectively halting the process.
Firefox 33.1 Mac OS X Yosemite
AdBlock turned off. No other add-ons. Set to Accept Cookies and Accept 3rd Party Cookies.
The purchase can be completed using Safari but I have a relative who prefers Firefox.