One of the people that bought one of my joeys called me at 6 am one morning a couple of months after she got him (so he was about 15+ wks OOP) that he had been vomiting and was lethargic. She brought him over and he was barely moving (I thought he was almost dead). I had called to make an emergency appt. So we took him in (he vomited again in the office).
The vet went over everything and figured out it was from feeding adult crickets to joey/young sugar gliders. They aren't able to handle the criatin (sp?) in the exoskeleton until they are older (suggested about 9 months to a year). She also said to only feed newly shed mealworms to young gliders because it can happen with them as well.
She gave subQ fluids and sent him home with Lactated Ringers Solution for subQ at home and antibiotics (there were two meds, but I don't recall what the other was for, and this wasn't 'my' animal, so I don't have records - sorry). The woman wasn't comfortable with the subQ, so I kept him at my house and nursed him through. It took about 2 months before he recovered completely. (Which he did and never had anymore problems with vomiting). I am sorry to say that he is no longer with us, but it is not related, her father sat on his pouch and him when he was a year OOP.
But until this all happened, I didn't know the problems with young gliders and adult insects.