As similarly documented here:
my 2d slices are not being colored in. I've tried multiple browsers, checked WebGL, and restarted my computer. Any fix?
Try the shift button a couple of times.
Are you using x64 ir 32 bit OS/browser? Because eyewire no longer supports 32 bit OS/browsers and may be the cause of your probs.
Also try emptying cache and/or cookies and ctrl+shift+F5.
I'm using safari on the most recent OS X, but have also tried chrome. I emptied cache and cookies but neither worked. Any other ideas?
Safari is not supported by ew, although you shouldn't be having a problem with Chrome. I'd email firstname.lastname@example.org