Package building

Hi! Okay, so I'm no longer able to build some packages using a 21.4 XEmacs. The error I get is Removing trailing whitespace from Info buffer... # bind ( stack-trace-on-signal debug-on-signal stack-trace-on-error debug-on-error) signal(void-function (match-string-no-properties)) # bind (data error-symbol) signal-error(void-function (match-string-no-properties)) # bind (error-data) normal-top-level() # (condition-case ... . error) # (catch top-level ...) Symbol's function definition is void: match-string-no-properties xemacs exiting . gmake: *** [doc/riece-ja.info] Error 255 This has been reported by others as well. The method is part of XEmacs 21.5 core, but hasn't been in before. What can we do? Copy it into xemacs-base (where there, create a new file?)? Any suggestions? Thanks, norbert.