Most often this error is caused by the receiver AMI model, but not always. It would help if you tell use the AMI models that you are using. Somebody might know of specific trouble or tips for the model you have. Try increasing the Samples per Bit parameter and keep it as a power of 2 (32, 64, 128, etc.).
Just one comment..it looks like you may not be probing at the right location. It says in the dialog that you're building the eye at U1.1p/n. If I had to guess, that's probably your driver. I'm not sure that would cause this error, but something to consider.
I double checked and thats my receiver.