Open Source Document Management System | OpenKM

hi,all
i have some questions when login the openKM.
please help me ,thanks very much!!!!
config: openKM4 + jboss4 + winXP .
OpenKM.cfg :
# Default configuration values
#
repository.config=repository.xml
repository.home=repository
# system.user=system
default.user.role=UserRol
default.admin.role=AdminRol
principal.adapter=es.git.openkm.principal.DatabasePrincipalAdapter
max.file.size=5
max.search.results=25
# system.demo=off
# update.info=off
# system.ocr=/usr/bin/tesseract
# system.openoffice=on
# system.pdf2swf=/usr/bin/pdf2swf
# system.readonly=off
# system.antivir=/usr/bin/clamscan
restrict.file.mime=off
restrict.file.extension=*~,*.bak,._*

exception: javax.jcr.PathNotFoundException: okm:home

Why have you uncommented it :
Which is the purpose ?