Object reference not set to an instance of an object.

Question

I've got a complex terrain model I'm maintaining in PowerInRoads V8i SS10 on a Windows 10 machine. Upon opening the dgn, I get the following error:

I've reinstalled the .Net Framework and scanned the registry for errors. 
 
 Any ideas?

Marc Bachand · Accepted Answer

This is a common problem in the SS4 product. It generally means the file is corrupt. Have you tried the "civil display browser" key in and file fixer? There is a repair button in this dialogue. A word of caution though, it is almost certain that this will break some relationship in the file since it is this same relationship that has been corrupted.

Object reference not set to an instance of an object.

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