Export and Import

[aspinall1910]

Hi.

I am new to TS2 and have a question about importing and exporting files to and from the editor.
I have completed a test line and exported to excel csv. All good.
When I come to import the same file back I receive the following message " Nonetype attribute has no scene". I have not altered the csv in any way just exported and imported.

Any help gratefully received.
Aspinall1910.