[NTG-context] error in patterns treatment?

Installing the latest context release (cont-tmf only) I now get the following errors when generating the format: (/usr/local/teTeX/share/texmf-local/tex/context/patterns/lang-de.pat ! Nonletter. l.113 .ge5r[ odiaeresis] (/usr/local/teTeX/share/texmf-local/tex/context/patterns/lang-de.pat ! Nonletter. l.140 .k[ udiaeresis]5ra etc. The same occurred with the french patterns, others I did not test. Changing back to context version of 16-1-2006 brought everything back to normal. Has something in the system changed? yours sincerely, dr. H. van der Meer