I'm using emacs tramp to connect to an embedded system runnig yocto 
linux and open a file. But tramp fails with the following error:

Wrong method specification for 'ssh'

The file spec is /ssh:root@10.2.1.92:/var/log/messages

Attached is the tramp-verbose 10 output for the fail case.

When I use the scp method, I am able to open the file without problem.

When I try the same thing with the desktop PC where I have emacs 
running, the problem doesn't happen. So the issue is specified to the 
embedded system. One thing noteworthy is that the embedded system is 
missing the base64 program. I remember having an issue related to this 
in the past, but I don't know if it's relevant to the current problem.

What else can I do to further debug this?

-- 
Timur Aydın
TEL: 536 939 65 88