About half an hour ago, the asset system began experiencing unusually high load. Attachments, rezzing, and teleporting with attachments all rely on a steady asset system to work quickly and reliably. The asset server is still under heavy load and we are looking into ways to ease the current situation.
We are installing bigger and better hardware on Monday, but in the meantime, you will have more luck with teleportation if you are not wearing attachments.
Apologies for the inconvenience.