I can not into ripple trade any more?
Maybe someone in the Alternative Cryptocurrencies can tell you more if you move this thread over there, but flash should have nothing to do with it, if you mean macromedia flash the graphical engine thingie for browsers. The web based Ripple client does use javascript though, so if you disabled javascript or turned on some kind of javascript nanny plugin or something that could possibly cause Ripple some troubles.
In theory I suppose theres no proof yet that that flash didn't break javascript...
-MarkM-