Sorry for the slow answer, but i was on vacation
This was the first version, what i downloaded:
http://www.kikanet.hu/ispcp-omega-1.0.0-rc6.tar.bz2
I upgraded from RC5 to RC6. (See the upgrade instruction in this package, not on the webpage!)
1, Before the upgrade you must put a "," after the line 1572 in the ispcp-setup-methods.pl
2, After the upgrade you must change the variables to the values in the proftpd.conf
3, After the upgrade you must change the variables to the values in the /etc/apache2/mods-available/fastcgi_ispcp.conf
This worked for me.