cvsup error

[zen]

hi,
recently i tried to update my fresh install machine of 6.2RELEASE to 
6.2STABLE,
but alway failed with these error msgs:

proxy2# /usr/local/bin/cvsup -g -L 2 /etc/stable-supfile
Parsing supfile "/etc/stable-supfile"
Connecting to cvsup.id.FreeBSD.org
Connected to cvsup.id.FreeBSD.org
Server software version: SNAP_16_1h
Negotiating file attribute support
Exchanging collection information


***
*** runtime error:
***    ASSERT failed
***    file 
"/work/a/ports/lang/ezm3/work/ezm3-1.2/libs/m3core/src/runtime/common/RTHeapMap.m3", 
line 35
***

  use option @M3stackdump to get a stack trace
Abort (core dumped)
proxy2#

could anyone tell me what is the problems??
 it AM2 X2 proc build on amd64 arch

TIA

ZeN