Posted for Newlan2dl@aol.com:

 Ron
 
 If the surface wasn't prepared, it probably won't stick worth a damn. Before
 I'd sand it, try to pick it off with a utility knife blade held flat of
 course.


[pardon my butting in... if it doesn't just pop off, instead of a utility knife blade use a brand new single-edge razor blade.  You can buy them by the box at the auto paint store.  They're much thinner than the utility blades, they have their own little handle and they're smoother & sharper to boot.  Do not try to pick it off dry... spray a mist of plain old rubbing alcohol (or wipe it on with a saturated cloth) onto the window first... it will act as a lubricant and the razor blade will actually float on it but still get under the edge of the bit of epoxy.  You can actually scrape the epoxy off this way without damaging the underlying acrylic surface.  Any teeny marks that are left behind can be polished out with an acrylic polishing compound... sanding won't be required.

   <Marv>             ]