Hello,
I had the same issue. I didn't find any breverb key on registry which tell where the banks are.
So I tried to copy the "factory-presets.db" where the .dll is ==> didn't change anything.
I have the same problem with TH2.
The "import from file" don't work for *.db.
However, I have found a way to have the factory preset back :
- under "banks", right click ==> "Create new"
- chose the name you want
- right click on the new bank and choose "restore from factory bank..."
- chose the factory bank you want to restore
- repet the operation for all the factory banks
(Sorry for my english, it's not my native langage :))