I recently purchased this via the App Store (after using old version for years), and installed the 4.5 update this morning. Now I can't get any SFTP connections to work (saved or added after the update). The error message is "Connection failed". Screenshot including Activity window is attached. Log is blank.
Restarted machine after the update, though it was not required. Cyberduck was the only app updated. Using OS X 10.9.4.
Duplicate for #8102. Fixed in 63dbe3d. The 4.5.1 bugfix release is waiting to be approved for release in the Mac App Store. This issue does not affect the non-sandboxed version of Cyberduck available from our website.