Layout refuses to open

[Herman]

Hello @Neo . Suddenly I have a layout that does not want to open again. I send the error and an export file to the studio.
I have no clue what caused it. The layout was running fine when I closed it, kept it under an higher version nr to start again, but it will not open anymore.
This layout was not in my backup in this V7 format. Some help please. Thanks, 
Kind regards, Herman
 

[Neo]

Hi Herman,

I have received your layout and will have a look at it.

Kind regards,

Neo