If you set Notebooks’ Home Folder to a folder on your PC which no longer exists or which is not accessible any more, you may experience crashes on startup. If you are familiar with RegEdit you could check and correct that with a few steps:
- launch RegEdit
- navigate to HKEY_CURRENT_USER\Software\aschmid\NotebooksWin
- delete the key NotebooksFolder
- close RegEdit
When you relaunch Notebooks it should ask you to select a new Notebooks Home.