Layout file cannot be opened


I have a layout file- 6-7 pages mostly with elevations/floorplans exported from Sketchup. I had saved it correctly on my desktop and this morning when trying to launch Layout says : “File cannote be opened in Layout”.

Please let me know what I could do to correct this, as I have probably spent 6hours yesterday working on this file and I do not want to loose it.

Thank you,

Could you share the layout file so we can try to open it?

I cant seem to be able to upload the document as it is too heavy.