problem updating 1.0.6 -> 1.0.7

[aka000]

i tried to update my ispcp server, i get this error message :

[..............]
getCmdExitValue() | Ending...
sys_command('/bin/cp -pf /etc/ispcp/apache/working/ispcp.conf /etc/apache2/sites-available/') | Ending...
sys_command() | Starting...
system() | [DEBUG] Module cgid already enabled
getCmdExitValue() | Starting...
getCmdExitValue() | [DEBUG] External command exited with value 0
getCmdExitValue() | Ending...
sys_command('/usr/sbin/a2enmod cgid') | Ending...
sys_command() | Starting...
system() | [DEBUG] Module rewrite already enabled
getCmdExitValue() | Starting...
getCmdExitValue() | [DEBUG] External command exited with value 0
getCmdExitValue() | Ending...
sys_command('/usr/sbin/a2enmod rewrite') | Ending...
sys_command() | Starting...
system() | [DEBUG] Module suexec already enabled
getCmdExitValue() | Starting...
getCmdExitValue() | [DEBUG] External command exited with value 0
getCmdExitValue() | Ending...
sys_command('/usr/sbin/a2enmod suexec') | Ending...
sys_command() | Starting...
system() | [DEBUG] ERROR: Site ispcp.conf not properly enabled: /etc/apache2/sites-enabled/ispcp.conf is a real file, not touching it
getCmdExitValue() | Starting...
getCmdExitValue() | [DEBUG] External command exited with value 1
getCmdExitValue() | Ending...
sys_command() | [ERROR] External command '/usr/sbin/a2ensite ispcp.conf' exited with value 1 !
exit_msg() | Starting...
exit_msg() | Ending...