I have to do pkgdb -F and I got this error, and so I can't use portsnap to update anymore or do anything else, and I can't even do this now portversion -v -l "<".

Here is what happe:

localhost# pkgdb -F
---> Checking the package registry database
Stale origin: 'devel/gnu-libtool': perhaps moved or obsoleted.
-> The port 'devel/gnu-libtool' was removed on 2006-06-05 because:
"Has expired: devel/libtool15 is now stock and should be used instead"
-> Hint: gnu-libtool-1.5.20 is required by the following package(s):
kde-3.5.1
kdevelop-3.3.1_1
-> Hint: checking for overwritten files...
-> No files installed by gnu-libtool-1.5.20 have been overwritten by other packages.
Deinstall gnu-libtool-1.5.20 ? [no]
Duplicated origin: devel/libgsf - libgsf-1.13.3_1 libgsf-1.14.1
Unregister any of them? [no]
Stale dependency: gimp-2.2.13,1 -> avahi-0.6.13_3 ():
Install stale dependency? ([y]es/[n]o/[a]ll) [yes]
can't convert nil into String

I read everywhere online using google, but I can't find the correct answer to solve this solution. Anyone can help?

Thanks.. in advance.