Unchecking UseGPUCanvas worked.
Thank-you!

Condition:
Windows 10
Earmaster 7.7.85

Attempt to access General Workshops, Rythm Clapback.

Observation:
tVMLessonIntro.PrepareToShow
Access violation at address 00000000009EA17C in module 'Ear70.exe'
(offset 60A17C). Write of address 0000000000000008

Comments:
I've previously experienced ...