Neighbor Visit Frustrations!

Thanks for the replies everyone - I'm experiencing the same problems as Danco. I can send Feds, click on presents and have lots of Feds in my town (thank goodness!) but I can only get through one neighbour before my game crashes and I'm sent back to my home screen. Brutal! Hoping it goes away as quickly as it started, because I can't figure out what else to do.

Sorry to any of my neighbours that might be on here!