X Windows error on Ubuntu 17.10

[Bill Janssen]

Getting this:

$ ./my_kivy_app
[INFO   ] [Logger      ] Record log in /home/wjanssen/.kivy/logs/kivy_17-11-01_43.txt
[INFO   ] [Kivy        ] v1.10.0
[INFO   ] [Python      ] v2.7.14 |Anaconda, Inc.| (default, Oct 27 2017, 18:21:12)
[GCC 7.2.0]
[INFO   ] [Factory     ] 194 symbols loaded
[INFO   ] [Image       ] Providers: img_tex, img_dds, img_sdl2, img_pil, img_gif (img_ffpyplayer ignored)
[INFO   ] [Text        ] Provider: sdl2
[INFO   ] [OSC         ] using <multiprocessing> for socket
[INFO   ] [Window      ] Provider: sdl2(['window_egl_rpi'] ignored)
X Error of failed request:  BadWindow (invalid Window parameter)
  Major opcode of failed request:  4 (X_DestroyWindow)
  Resource id in failed request:  0x0
  Serial number of failed request:  199
  Current serial number in output stream:  201
$

Any thoughts on what could be causing this?  Works fine on 16.10.

[Bill Janssen]

Tried this on a different 17.10 machine, and it worked.  Still trying to figure out the differences.