RapidWeaver 8.6.1 Crashed - Now won't open

Hello Everyone;
Working on RapidWeaver project. Experienced a sudden RapidWeaver crash. Now RapidWeaver will not open. That is, it repeatedly crashes on launch. Not just the project I was working on but any old project so doesn’t appear to be a corrupt project file. Have done a re-start. Problem persists.

Feels like a preference corruption issue. Could anyone enlighten me concerning what files I should try trashing (names & locations). Or any other ideas at all. Thanks in advance.

Cheers,
Craig

Never Mind. I found the bad boys and trashed them. All ok and back to work.
Cheers, Craig