I agree with Boc and Tram here.
I had some mixed results requiring an EDR to get some things right after the install. I went to bed and let it run overnight so I wouldn't mess with the machine. I've been around long enough to know better than to touch the PC while Content Manager is busy!
Now for repairs, most of them were really, really, easy with things such as missing thumbnail images and some incorrect tags in the Config.txt files. The repair process took me about 3 days with my 10-year's worth of content to go through. In some ways you are a bit luckier doing this process now since many of the creators and others are updating their content to the current standards.
So if you could be so kind as to tell us what kind of problems, I'm sure one of us, or most of us, can help you get things sorted out.
John