I was using google imagery and there was no issue to prefetch it. But now it has stopped working.
After entering the number of layers (default is 20, I change it to 19) as soon as I click OK I shows a windows error message and the Mission Planner gets closed. I have the latest Mission Planner as I let it update whenever it requires to do so and I have Windows 10 that is also regularly updated. Some update, I don't know either of the Mission Planner or Windows, caused this issue. Any suggestion to resolve this please?