"A serious problem has occurred..."

I got this message when i try to open a project on my Cubase 8.5 .

The reason for failure I think is because I start a project on my pc im using original cubace 8.5 , then i continue to work on the project on another computer with original demo version of the Cubase 8 .
now i back to my PC / Cubase and i got this message below .
here is the crash file : Dropbox - Error … 2.dmp?dl=0
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