Well that's certainly a bit odd.

Try running:

xdg-mime query default inode/directory

If I understand the code correctly (I've much experience neither in C++ nor Qt), this is the command Strawberry uses to find your default file manager.

If it's something other than Dolphin, just go to Default Applications in KDE settings and change Utilities/File Manager to Dolphin.

See if that works!

Well that's certainly a bit odd.

Try running:

xdg-mime query default inode/directory

If I understand the code correctly (I've much experience neither in C++ nor Qt), this is the command Strawberry uses to find your default file manager.

If it's something other than Dolphin, just go to Default Applications in KDE settings and change Utilities/File Manager to Dolphin.

See if that works!