Description of problem:
when attempting to clone channels I receive the following error:

"500 Error - Internal Server Error"

Logs indicate:
# cat /var/log/httpd/error_log
...
[Tue Apr 16 10:35:55.647802 2013] [:error] [pid 1788] Couldn't open file: /usr/share/spacewalk/web//network/software/channels/manage/manage_channels_header.pxi (No such file or directory) at /usr/share/perl5/vendor_perl/PXT/ApacheHandler.pm line 414.\n\tPXT::ApacheHandler::_read_file('PXT::ApacheHandler', '/network/software/channels/manage/manage_channels_header.pxi', '/usr/share/spacewalk/web') called at /usr/share/perl5/vendor_perl/PXT/Request.pm line 534\n\tPXT::Request::include('PXT::Request=HASH(0x7fb7cee67be8)', '-path', '/network/software/channels/manage/manage_channels_header.pxi') called at /usr/share/perl5/vendor_perl/PXT/Handlers.pm line 115\n\tPXT::Handlers::pxt_include_handler('PXT::Request=HASH(0x7fb7cee67be8)', 'file', '/network/software/channels/manage/manage_channels_header.pxi') called at /usr/share/perl5/vendor_perl/PXT/Parser.pm line 141\n\tPXT::Parser::expand_tag('PXT::Parser=HASH(0x7fb7d0b13940)', 'pxt-include', 'CODE(0x7fb7cfa5b6f8)', 'SCALAR(0x7fb7d0871488)', 'PXT::Request=HASH(0x7fb7cee67be8)') called at /usr/share/perl5/vendor_perl/PXT/Parser.pm line 72\n\tPXT::Parser::expand_tags('PXT::Parser=HASH(0x7fb7d0b13940)', 'SCALAR(0x7fb7d0871488)', 'PXT::Request=HASH(0x7fb7cee67be8)') called at /usr/share/perl5/vendor_perl/PXT/ApacheHandler.pm line 456\n\tPXT::ApacheHandler::pxt_parse_data('PXT::ApacheHandler', 'PXT::Request=HASH(0x7fb7cee67be8)', 'SCALAR(0x7fb7d0871488)') called at /usr/share/perl5/vendor_perl/PXT/ApacheHandler.pm line 103\n\teval {...} called at /usr/share/perl5/vendor_perl/PXT/ApacheHandler.pm line 103\n\tPXT::ApacheHandler::handler('Apache2::RequestRec=SCALAR(0x7fb7d0accb70)') called at -e line 0\n\teval {...} called at -e line 0
[Tue Apr 16 10:35:55.735044 2013] [:error] [pid 1788] Execution of /var/www/html/network/software/channels/manage/clone.pxt failed at Tue Apr 16 10:35:55 2013: Can't locate object method "new" via package "RHN::Form::ParsedForm" (perhaps you forgot to load "RHN::Form::ParsedForm"?) at /usr/share/perl5/vendor_perl/Sniglets/ChannelEditor.pm line 386.
[Tue Apr 16 10:37:58.809017 2013] [:error] [pid 1788] Traceback sent to root@localhost at /usr/share/perl5/vendor_perl/PXT/ApacheHandler.pm line 563.


# grep -n "RHN::Form::ParsedForm" /usr/share/perl5/vendor_perl/Sniglets/ChannelEditor.pm
386:  my $form = new RHN::Form::ParsedForm(name => 'Clone Channel Details',



Version-Release number of selected component (if applicable):
[root@satellite ~]# spacewalk-schema-upgrade --version
Schema upgrade: [spacewalk-schema-1.9.38-1.fc18] -> [spacewalk-schema-1.9.38-1.fc18]
Your database schema already matches the schema package version [spacewalk-schema-1.9.38-1.fc18].


How reproducible:
everytime

Steps to Reproduce:
1.  install spacewalk via documented procedures
2.  sync Fedora channels
3.  clone a sync'd channel
4.  get above error
  
Actual results:
"500 Error - Internal Server Error"

Expected results:
the cloned channel

Additional info:
I created the following link and it appeard to have resolved the problem because I could clone the base and child "debug" channels.  Though several attempts to clone the child 'updates' channel have failed.  No error messages just a spinning cursor.

ln -s /var/www/html/network/software /usr/share/spacewalk/web/network/software