Safari update breaking Java in Sage?
Today none of my Mac-using students could get Jmol stuff to display in class---and when I tried to use the notebook I'd written for class, it would no longer display for me, either! We all got the error "You do not have Java applets enabled in your web browser, or your browser is blocking this applet. Check the warning message from your browser and/or enable Java applets in your web browser preferences, or install the Java Runtime Environment from www.java.com"
Of course, (1) I do have Java applets enabled in Safari (yes, I double-checked) and (2) I do have the most recent JRE installed (yes, I double-checked).
Everything was working fine last week after the latest JRE update... and the only thing that has changed since then is that Safari updated to 6.0.4. I'm wondering whether the new Java handling (case-by-case) is not being triggered by Sage and that's why we're not able to get Jmol to work.
Or, am I missing something else that will get Java to work?
Just as a workaround, you can use `viewer=canvas3d` or `viewer=tachyon` to at least see 3D stuff (see [here](http://www.sagemath.org/doc/reference/plot3d/sage/plot/plot3d/base.html#sage.plot.plot3d.base.Graphics3d.show)) though of course this is less than ideal.
Have the "Click here" instructions been followed at http://support.apple.com/kb/HT5648
Karl-Dieter, neither of those options works (in either Safari or Camino)---canvas3d generates a white box with a black border, and tachyon generates a fuzzy cube-frame. The Jmol non-interactive image is way better than either of these.
canvas3d requires one to enable WebGL. Go in Safari to the "Develop" menu and click "Enable WebGL". See if that works - not that we have polished it very much, though it's pretty.
I can confirm that certain plots don't work with canvas3d. Regular plot of plot3d seems to work, but plotting vectors doesn't, nor "line".