NotQuiteANoble
Explorer
My theory was that people would be more familiar with in game disputes than me.That is entirely tied up in the relationship with the player(s) - so, it really is to do with the personal dispute, and whether it can be managed constructively.
My point was that while we can give broad advice based on our own experiences, our format does not suit actually working through the details of conflicting reports.
I personally think the simplest answer is to start a new campaign. Supporting the past choices of another GM can be hard, especially when they go a bit off the beaten track. Supporting high level play is also hard, if you aren't an experienced DM. Start fresh, and you don't have to worry about the questionable game balance choices someone else made.
I think the new campaign is a good idea though