Polylines are non-coplanar

[mermerCAD]

Hi-

We just upgraded to 2013, and one computer is having a weird issue.  There is nothing in the drawing.  He draws two polylines.  When he goes to fillet them, it says they are non-coplanar.  The properties palette says both polylines are elevation 0.  Does anyone know why this is happening and how I can fix it?

Thanks so much!

Meredith

[antoniovinci]

Command: _FLATTEN

[Neilw_05]

I. Verify there is no UCS in effect

II. Apply Basic troubleshooting techiniques:

      A. Isolate the source

          1) Is it specific to the computer?

               a) Open the file on other machines

               b) Test using a new default user profile

          2) Is it specific to the file?

               a) Check file for corruption (Audit)

               b) Test on new file from clean default template

          3) etc.

[neilyj666 · Accepted solution]

convert 2d polyline to 3d then convert 3d to 2d - there are some instances where this works

[fcernst]

Do the polylines display an extrusion (that is Z= -1)?