[madmartigan]

Hi. I installed the macOS 10.15 Beta. When I started Calibre I got this error, any ideas?

calibre, version 3.44.0
ERROR: Startup error: There was an error during calibre startup. Parts of calibre may not function. Click Show details to learn more.

Traceback (most recent call last):
File "site-packages/calibre/gui2/main.py", line 291, in initialize_db_stage2
File "site-packages/calibre/gui2/main.py", line 235, in start_gui
File "site-packages/calibre/gui2/ui.py", line 372, in initialize
File "site-packages/calibre/gui2/tag_browser/ui.py", line 73, in init_tag_browser_mixin
File "site-packages/calibre/gui2/tag_browser/view.py", line 237, in set_database
File "site-packages/calibre/gui2/tag_browser/model.py", line 366, in set_database
File "site-packages/calibre/db/cache.py", line 62, in call_func_with_lock
File "site-packages/calibre/db/cache.py", line 616, in set_pref
File "site-packages/calibre/db/backend.py", line 134, in set
File "site-packages/calibre/db/backend.py", line 128, in __setitem__
File "site-packages/calibre/db/backend.py", line 874, in execute
File "src/cursor.c", line 236, in resetcursor
ReadOnlyError: ReadOnlyError: attempt to write a readonly database