Unexpected File Format, someone help?

I need help to opening this file, unfortunately it took 3 days of work, thank you!

Please don’t double post. That just creates confusion and it won’t help you get your issue sorted any faster. Colin will see your other post in the other thread.

Already deleted the other post, sorry !

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@colin Sorry for the inconvenience, but can the team help me? It’s an important project.
Thx

I don’t think that I have recovered much from the file.

@colin Thank you !!