A page in my project gives the following error

    "Object reference not set to an instance of an object"

The LastError.txt file that is generated contains this info,

    Boolean IsPolyWire(System.String, Double): Object reference not set to an instance of an object.
    0: at ECT.ECAD.API.Utility.IsPolyWire(String handle, Double loopOverRadius)
    1: at ECT.ECAD.API.PageDBBuilder.CheckWire(DataTable tbWires)
    2: at ECT.ECAD.API.PageDBBuilder.BuildDB()
    3: at ECT.ECAD.API.Page.UpdateDBFromDrawing()


When I go to Manage > Validate Page, the following error message is provided,

    "Value was either too large or too small for an Int32"
    
I've done some searching on communities.bentley.com for the "Boolean IsPolyWire" issue but and it recommend contacting support

communities.bentley.com/.../error---object-reference-boolean-ispolywire---openutilities-substation-connect



We're using Promis.e CONNECT Edition Update 5 - Version 10.05.00.38

Please advise how I should troubleshoot & fix the issue.



Thanks very much.