After updating from Animate CC 2016 to Animate CC 2017 I have experience publishing issues. I use Adobe Animate CC 2016 mostly to create HTML5 banners and have been successfully 'Publishing' HTML+Java Files. But since my recent update to Animate CC 2017, any FLA file that I try publishing keeps experiencing Java Error, with no further explanation.
The only solution that I've come up with, is reverting back to the 2016 version of the program. (which works!)