On your other note I suspected such a task was in my future, but the times I have searched about it I found no real tutorial or How-To, other than the ones describing the old method using boards.txt. I certainly would be grateful for any guidance on that topic you would be willing to share, but perhaps it deserves its own thread for the benefit of others. And perhaps I should get to the bottom of this IDE thing first...
Thanks for the response Pert. It looks like part of your post got cut off, and I'd be interested to hear the rest of this sentence: "The possibly relevant ones are: ... "
I think the next step would be to determine the minimum code that will still cause the issue.
TIMSK1 |= (1 << OCIE1C);