Error message: false parameter

[greydutch]

Hello,
Cyberduck worked fine for over a year. However, after updating to version 9.5.4 I am having problems: when I try to start the program this message appears: "false parameter" and Cyberduck won't start. Funny enough, when I click on the file with the licence key (xxxx.cyberducklicense) Cyberduck does start. But that is not really a permanent solution.

I would appreciate it a lot to hear what when wrong here and how to repair it.

Many thanks!

Leo

[xop01]

The program can start, because opening the .cyberducklicense file launches it. The normal start is the one that fails, so the shortcut or the old launch command is the problem, not the license.

Make a new shortcut from Cyberduck.exe itself. Leave the target as just the exe, with nothing after it, and start the app from that shortcut. After an update, an old shortcut often still points at the previous folder or still carries an extra argument, and that shows up as a bad parameter.

If the new shortcut works, delete the old one. If it shows the same message, quit Cyberduck, rename %AppData%\Cyberduck to Cyberduck.bak, and start it again. That boots with empty settings. If that works, something in the old settings folder was being passed on launch. You can copy bookmarks back from the renamed folder after you confirm the fresh start is fine.

@greydutch