Solaris x86 u6, perl 5.8.8, squeezecenter 7.4-25724

The first UI interaction I do via the web UI after starting squeezecenter always triggers an error of the form:

[09-03-29 03:20:57.1699] Slim::Utils::Misc::msg (1113) Warning: [03:20:57.1695] Argument "" isn't numeric in numeric gt (>) at /var/cache/slimserver/templates/2756ec15f94b316a6220f2ffd2aadc50 line 156.

Which is caused by:

    #line 112 "/export/Tools/SunOS_5.10_i86pc_amd64/squeezecenter-7.4-25724/HTML
/Default/pageheader.html"
    if ($stash->get('pageHeaderMenu') && ! $stash->get('pwd_list')) {
    #line 112 "/export/Tools/SunOS_5.10_i86pc_amd64/squeezecenter-7.4-25724/HTML
/Default/pageheader.html"
    $stash->set('pwd_list', [ $stash->get('pageHeaderMenu') ]);
    }

    #line 112 "/export/Tools/SunOS_5.10_i86pc_amd64/squeezecenter-7.4-25724/HTML
/Default/pageheader.html"
    if ($stash->get('pwd_list') && $stash->get('pwd_list') ne '' && $stash->get(
['pwd_list', 0, 'length', 0]) > 0) {
    #line 112 "/export/Tools/SunOS_5.10_i86pc_amd64/squeezecenter-7.4-25724/HTML
/Default/pageheader.html"
    $stash->set('pwd_list', [ $stash->get('pwd_list') ]);