mergemaster broken

hello,

i got the following today while trying to run mergemaster

thanks,
max

beetle# mergemaster -sv

*** The directory specified for the temporary root environment,
    /var/tmp/temproot, exists.  This can be a security risk if untrusted
    users have access to the system.

  Use 'd' to delete the old /var/tmp/temproot and continue
  Use 't' to select a new temporary root directory
  Use 'e' to exit mergemaster

  Default is to use /var/tmp/temproot as is

How should I deal with this? [Use the existing /var/tmp/temproot] d

   *** Deleting the old /var/tmp/temproot

*** Creating the temporary root environment in /var/tmp/temproot
 *** /var/tmp/temproot ready for use
 *** Creating and populating directory structure in /var/tmp/temproot

 *** Press the [Enter] or [Return] key to continue
"/usr/src/etc/Makefile", line 34: Malformed conditional (${MK_AMD} != "no")
"/usr/src/etc/Makefile", line 36: if-less endif
"/usr/src/etc/Makefile", line 38: Malformed conditional (${MK_APM} != "no")
"/usr/src/etc/Makefile", line 40: if-less endif
"/usr/src/etc/Makefile", line 42: Malformed conditional (${MK_BSNMP} != "no")
"/usr/src/etc/Makefile", line 44: if-less endif
"/usr/src/etc/Makefile", line 46: Malformed conditional
(${MK_FREEBSD_UPDATE} != "no")
"/usr/src/etc/Makefile", line 48: if-less endif
"/usr/src/etc/Makefile", line 50: Malformed conditional (${MK_LOCATE} != "no")
"/usr/src/etc/Makefile", line 52: if-less endif
"/usr/src/etc/Makefile", line 58: Malformed conditional (${MK_MAIL} != "no")
"/usr/src/etc/Makefile", line 60: if-less endif
"/usr/src/etc/Makefile", line 79: Malformed conditional (${MK_PORTSNAP} != "no")
"/usr/src/etc/Makefile", line 81: if-less endif
"/usr/src/etc/Makefile", line 87: Malformed conditional (${MK_WIRELESS} != "no")
"/usr/src/etc/Makefile", line 89: if-less endif
"/usr/src/etc/Makefile", line 208: Malformed conditional (${MK_PPP} != "no")
"/usr/src/etc/Makefile", line 211: if-less endif
"/usr/src/etc/Makefile", line 212: Malformed conditional (${MK_MAIL} != "no")
"/usr/src/etc/Makefile", line 220: if-less endif
make: fatal errors encountered -- cannot continue

  *** FATAL ERROR: Cannot 'cd' to /usr/src/etc and install files to
      the temproot environment