If type a patron name into the "check out" form and come to the page where you can choose from a list of existing patrons, there is a "New" menu button which is supposed to offer a drop-down list of patron categories. This button is broken, displaying no menu at all.

The markup for the button comes from patron-toolbar.inc which is also used on members-home.pl. The button on members-home.pl works fine.

In the template is a loop for displaying the categories:

<!--TMPL_LOOP Name="categoryloop"-->
{ text: "<!--TMPL_VAR Name="description"-->",  url: "/cgi-bin/koha/members/memberentry.pl?op=add&amp;categorycode=<!--TMPL_VAR Name="categorycode"-->" },
<!--/TMPL_LOOP-->

members-home.pl contains code to build this loop variable:

my @categories=C4::Category->all;
$template->param(
    branchloop=>(defined $branch?GetBranchesLoop($branch):GetBranchesLoop()),
    categoryloop=>\@categories,
);

There is no mention of "categoryloop" in circulation.pl