Big Problem with Portage|Emerge

[univers4113]

Hi ALL
Actually i use SABAYON 5.4 Gamers edition Xmas
I have a big problem with emerge :

sabayon54games ~ # emerge --sync
Traceback (most recent call last):
File "/usr/bin/emerge", line 43, in <module>
retval = emerge_main()
File "/usr/lib64/portage/pym/_emerge/main.py", line 1312, in emerge_main
settings, trees, mtimedb = load_emerge_config()
File "/usr/lib64/portage/pym/_emerge/actions.py", line 2918, in load_emerge_config
mtimedb = portage.MtimeDB(mtimedbfile)
File "/usr/lib64/portage/pym/portage/proxy/objectproxy.py", line 31, in __call__
return result(*args, **kwargs)
File "/usr/lib64/portage/pym/portage/util/mtimedb.py", line 18, in __init__
self._load(filename)
File "/usr/lib64/portage/pym/portage/util/mtimedb.py", line 35, in _load
(filename, str(e)), noiselevel=-1)
UnicodeDecodeError: 'ascii' codec can't decode byte 0x9b in position 19: ordinal not in range(128)
sabayon54games ~ #

Can you help me, or any suggestion
Thanks

[Fitzcarraldo]

Are you running that command from the LiveDVD environment, or from the installation on an HDD?