Setting FPS with Python is crashing

I am not able to set the FPS for Blender using Python and my attempts result in a crash every time.

I have tried two command variants and both result in the same EXCEPTION_ACCESS_VIOLATION

print(bpy.context.scene.render.fps) #prints: 60
bpy.context.scene.render.fps = 60 #Crashes:

--------

print(bpy.data.scenes["Scene"].render.fps) #prints: 60
bpy.data.scenes["Scene"].render.fps = 60 #Crashes:

I am pretty sure one of those commands worked on this PC/Install just the other day. Why all the sudden it fails is strange.

Could it be a context issue or maybe other options I have changed?

Thanks
[update]

Just ran a project from the other day that I know did run before, it also crashes when setting the fps, so something has changed.

Into tmp folder, crash should have writtent crash.txt file.
You should obtain a clue by reading it or read console message when blender crashes.