Aug 31, 2017
The bug that caused some data created on MediBang Paint Pro 11.1 (Windows 64-bit) to be unopenable has been fixed in Version 11.2, so please update to the new version. We apologize for any inconvenience experienced.
https://medibangpaint.com/en/pc/
Edit: The bug where the operation tool went in an opposite direction after flipping the canvas has also been fixed in the ver. 11.2 of MediBang Paint Pro.
Thank you for your understanding.