I have this Error?
Invalid coding-system (raw-text-dos), using 'undecided
In .gnus is:
(setenv "MM_CHARSET" "iso-8859-1")


--=--=--=--=--=--=--=--=-Hier Abbeissen-=--=--=--=--=--=--=--=-

Okay, I set debug-on-error and.

Error:
Sending...
Invalid coding-system (raw-text-dos), using 'undecided
Invalid coding-system (raw-text-dos), using 'undecided
Wrote e:\XEmacs\XEmacs-21.2\i586-pc-win32\Mail\archive\news\1999-07
Sending...done

No backtrace?

I write a Mail and C-c C-c
Pgnus ask me "What Charset:
I: iso-8859-1 RET
Pgnus: What Charset:
I: iso-8859-1 RET

Error Message:
Generating summary...
Generating summary...done
Sending...
220 Hamster-SMTP Vr. 1.3 (Build 1.3.0.40) ready
250 localhost
250 OK
250 OK
354 Start mail input; end with <CRLF>.<CRLF>
250 OK
221 closing connection - goodbye!
Invalid coding-system (raw-text-dos), using 'undecided
Invalid coding-system (raw-text-dos), using 'undecided
Wrote e:\XEmacs\XEmacs-21.2\i586-pc-win32\Mail\archive\mail\1999-07
Sending...done

No backtrace

I´m testing pgnus088 and have not problems with:  
Invalid coding-system (raw-text-dos), using 'undecided ?;-)
--=--=--=--=--=--=--=--=-Hier Abbeissen-=--=--=--=--=--=--=--=-

-- 

Zwei Dinge sind unendlich, das Universum und die menschliche Dummheit. 
Beim Universum bin ich mir aber noch nicht ganz sicher.
A. Einstein