I pass the day writing a script to encapsulate the migration of the old csproj to the new format. But, when the open source app returns an error of migrating the script continue. I check the return code and when it's an error, it's return 0.

After many tries, I return to my house and start looking at the open source code for understand what's happening and try to correct it.

OMFG, I cannot change the code to return an `int` instead of void. The method is in the public area of the code.

I very happy that this app, it's open source, so I can do my own version for my need.