JabRef version

Latest development branch build (please note build date below)

Operating system

MacOS

Details on version and operating system

No response

Checked with the latest development build (copy version output from About dialog)

• I made a backup of my libraries before testing the latest development version.
• I have tested the latest development version and the problem persists

Steps to reproduce the behaviour

1. Selet style -> add .csl file
2. Remove the added file
3. It is not removed immediatly. An error shows up when removing the "removed" csl file again.

Appendix

No response