Today it wasnt possible to open the file,  although the file size is 700MB.  Importing the file with the known properties hasnt worked.
Are you able to fix the file header so it can be openend again?
I have already uploaded the file to a server and would be happy to supply the download link via PM.
Thank you in advance.
It`s very important to us because this file can NOT be reconstructed from other sources.
The file size shows 700MB (which is correct) - but can`t be openend.
I tried importing the file which results in this…showing that the file is NOT empty.