problems with special characters on 2.6

[Ralf und Martina Wimmer]

I run LilyPond 2.6 on Windows 2000.

By using the characters from the keyboard for the german umlaut (ä, ö, ü) or
french accent (é, è) there are no printed signs in the pdf-output and the
following character is also ignored.

With Lilypond 2.4 and Cygwin on the same OS there is no such mistake.
I would prefere the version 2.6 which has (in my oppinion)the nicer
printout.

Are there any suggestions for help?

Best regards

Ralf Wimmer