When I launch the .exe for the GUI or console I get the following error in a message box titled "Unable to Initialize Services:"
Error loading settings file ----> System.Xml.XmlException : Invalid character in the given encoding. Line 1, position 6
and when clicking "Ok" does not load NUnit.
This is a fresh install of 2.5.1. I've tried reinstalling.
Incidentally, 2.4.8 now throws up the "...has encountered a problem a needs to close..." which used to work fine on my machine.
Your settings file has become corrupted in some way. If you delete it NUnit will create a new one. You can find it under ApplicationData.
Please check on the nunit-discuss list to find out whether a problem is really
a bug before reporting it here.