unison -addversionno Received unexpected header from the server Following instructions in How to use multiple versions of unison on one system? I have used unison -addversionno to sync a **Debian** and **Raspbian** system, but received this error Contacting server... Fatal error: Received unexpected header from the server: expected "Unison 2.48\n" but received "bash: unison-2.48: command not found\n", which differs at "b". . : It seems like the same versions are found but misinterpreted as incompatible. What can I do to get it working? I have also filed a bug on GitHub.

As it turned out in the discussion regarding the bug report _-addversionno_ currently truncates the version info at the minor number.

I had installed


unison-2.48.3


at the server and client (by copying the binary), but _-addversionno_ was looking for


unison-2.48


which did not exist.

As a workaround I created the symbolic link unison-2.48 pointing to unison-2.48.3.


ln -s unison-2.48.3 unison-2.48


Now it works as expected.