Is the problem with the
Account transactions report
itself, or a Favorite report based on Account transactions. If a favorite report, you would have just deleted that favorite report.
Therefore it is the Account transactions report itself.
When you do Reports->AccountTransactions->Customize->Reset, you get a crash, right?
I have a few things I would suggest. Start Money, and make the first thing you do is to go to
Reports->AccountTransactions->Customize->Reset
Have you tried the DateRange drop-down list at the bottom? I am not saying this will somehow let the Reset etc for that report start working, but it might be worth trying.
Also, what happens if you save that corrupt report to AddToMyFavoriteReports. I am just thinking of things to try that could have a side effect of letting you then reset the Account transactions report. I think this is very unlikely to help, but it could be worth a try.