Hello, yesterday I asked on the irc channel for this topic:
http://maemo.cloud-7.de/irclogs/freenode/_devuan/_devuan.2019-09-20.log.html#t2019-09-20T01:18:03

We are having a problem with different versions of the kernel when we
generate an ISO.

The error:
"Error in kernel version.
The kernel of the Live system and the kernel of the installer does not
match.
The installer can only be used if the kernel versions of the live system
(4.9.0-11-amd64) and the installer (4.9.0-9-amd64) are the same.
Please restart with the correct kernel (4.9.0-9-amd64)."

The same thing already happened in May and was solved by doing a rebuilt
of the installer.

Any ideas on this problem?