Description of problem:
This looks very similar to https://bugzilla.redhat.com/show_bug.cgi?id=998221, 
with the difference this is for fedora19-x64, with the current cobbler.

Version-Release number of selected component (if applicable):
cobbler-2.4.0-1.fc19.noarch

How reproducible:
100%

Steps to Reproduce:
1. install fresh copy of cobbler on f19
2. setup all local details
3. cobbler import --path /mnt/dvd  --name=fedora19 --arch=x86_64

Actual results:
# cobbler import --path /mnt/dvd  --name=fedora19 --arch=x86_64
task started: 2013-11-10_182023_import
task started (id=Media import, time=Sun Nov 10 18:20:23 2013)
Found a candidate signature: breed=redhat, version=rhel6
Found a candidate signature: breed=redhat, version=fedora16
Found a candidate signature: breed=redhat, version=fedora17
Found a candidate signature: breed=redhat, version=fedora18
Found a candidate signature: breed=redhat, version=fedora19
Found a matching signature: breed=redhat, version=fedora19
Adding distros from path /var/www/cobbler/ks_mirror/fedora19-x86_64:
creating new distro: fedora19-x86_64
Exception occured: <class 'cobbler.cexceptions.CX'>
Exception value: 'invalid input type'
Exception Info:
  File "/usr/lib/python2.7/site-packages/cobbler/remote.py", line 89, in run
    rc = self._run(self)
   File "/usr/lib/python2.7/site-packages/cobbler/remote.py", line 232, in runner
    self.logger
   File "/usr/lib/python2.7/site-packages/cobbler/api.py", line 925, in import_tree
    return import_module.run(path,mirror_name,network_root,kickstart_file,arch,breed,os_version)
   File "/usr/lib/python2.7/site-packages/cobbler/modules/manage_import_signatures.py", line 141, in run
    os.path.walk(self.path, self.distro_adder, distros_added)
   File "/usr/lib64/python2.7/posixpath.py", line 246, in walk
    walk(name, func, arg)
   File "/usr/lib64/python2.7/posixpath.py", line 246, in walk
    walk(name, func, arg)
   File "/usr/lib64/python2.7/posixpath.py", line 238, in walk
    func(arg, top, names)
   File "/usr/lib/python2.7/site-packages/cobbler/modules/manage_import_signatures.py", line 256, in distro_adder
    adtls.append(self.add_entry(dirname,kernel,initrd))
   File "/usr/lib/python2.7/site-packages/cobbler/modules/manage_import_signatures.py", line 314, in add_entry
    distro.set_kernel_options_post(self.signature.get("kernel_options_post",""))
   File "/usr/lib/python2.7/site-packages/cobbler/item.py", line 196, in set_kernel_options_post
    (success, value) = utils.input_string_or_hash(options,allow_multiples=True)
   File "/usr/lib/python2.7/site-packages/cobbler/utils.py", line 584, in input_string_or_hash
    raise CX(_("invalid input type"))

!!! TASK FAILED !!!


Expected results:


Additional info:
I got it to this point by adding the following patch to 
diff --git a/var/lib/cobbler/distro_signatures.json b/var/lib/cobbler/distro_signatures.json
index 9ad816d..dabe211 100644
--- a/var/lib/cobbler/distro_signatures.json
+++ b/var/lib/cobbler/distro_signatures.json
@@ -96,6 +96,22 @@
     "kernel_options":"repo=$tree",
     "kernel_options_post":"",
     "boot_files":[]
+   },
+   "fedora19": {
+    "signatures":["Packages"],
+    "version_file":"(fedora)-release-19-(.*)\\.noarch\\.rpm",
+    "version_file_regex":null,
+    "kernel_arch":"kernel-(.*)\\.rpm",
+    "kernel_arch_regex":null,
+    "supported_arches":["i386","x86_64","ppc","ppc64"],
+    "supported_repo_breeds":["rsync", "rhn", "yum"],
+    "kernel_file":"vmlinuz(.*)",
+    "initrd_file":"initrd(.*)\\.img",
+    "isolinux_ok":false,
+    "default_kickstart":"/var/lib/cobbler/kickstarts/sample_end.ks",
+    "kernel_options":"repo=$tree",
+    "kernel_options_post":"",
+    "boot_files":[]
    }
   },
   "debian": {