No changes have been made in my PhotoPost software for quite a long time. And no, I don't exactly know where this code is being run because the error code doesn't give me a clue about such info. But I am getting HUNDREDS of these errors every day now, which is a recent development.
There have also been NO changes on my server either, if this is in fact a memory issue as that link you provided infers.
I have to assume that each of those error emails coming to me means some user tried to do something that failed.
Yeah, I know I can turn off the emails, but that is kind of like cutting off my hand because my finger hurts...