Problem Description:

Generating Earthworks throws an error. Error as shown below.

Reason : Analysis with surface checker has not done correctly. Hence the run has been failed to find any Null points.

Steps to Resolve:

1. Analysis > Surface Checker > Check on Null points.

2. Delete the strings which are associated with the Null points then proceed Run surface checker.

3. Refer the help option for Errors and Warnings E0791.