You have probably partially installed wrong webif2.
ipkg remove webif
rm -f /usr/lib/ipkg/lists/*
ipkg update
And continue using the documented ways to install webif2: Kamikaze_Installation - Updating_OpenWrt_Kamikaze.
The BerliOS's FTP directory holds only files designed for White Russian! Although for example haserl for White Russian would probably work with Kamikaze 2.4, many other packages and mainly webif2 will not work.
There is no information on OpenWrt web site that the web gui for Kamikaze continues in the X-Wrt project.
mbm: Would not it be possible to insert at least a [size=6]small[/size] link to X-Wrt/webif2 in the main page?
Anyone interested in X-Wrt/webif2 for Kamikaze is welcome at:
X-Wrt: Forum | Wiki | Trac