Error 51E

[Bavery4404]

I keep getting the following Error. I have deleted and recreated this node several times with zero luck. Has anyone seen this before? I have attached the file. Thanks in advance!
Here is a snipe of the error and the model

 

[StressGuy]

I'm not seeing an attachment. What is the message that goes along with the 51E error?

Edward L. Klein
Pipe Stress Engineer
Houston, Texas

"All the world is a Spring"

All opinions expressed here are my own and not my company's.

 

[Pavel_1976]

Hello,
you can't delete a node, you can delete an element.
Open the elements list and check column with TO nodes. All numbers should be reasonable.

 

[Nicolas B]

You probably have an element with an undefined (empty) node number, as Pavel_1976 said, check your elements list.