I was using the following idiom, and everything was working fine ---- package app; use Dancer ':syntax'; use Dancer::Plugin::Ajax; load_app "app::app1", prefix => "/app1"; load_app "app::app2", prefix => "/app2"; .. true; ---- package app::app1; use Dancer ':syntax'; .. true; ---- package app::app2; use Dancer ':syntax'; .. true; ---- The above was a holdover from earlier versions of Dancer, but, as I noted above, it was working fine. Today I noticed that the Dancer::Cookbook has a different suggestion, so I implemented that and ran into a problem. My new implementation is ---- package app; use Dancer ':syntax'; use Dancer::Plugin::Ajax; use app::app1; use app::app2; prefix undef; .. true; ---- package app::app1; use Dancer ':syntax'; prefix 'app1'; .. true; ---- package app::app2; use Dancer ':syntax'; prefix 'app2'; .. true; ---- I get the following error Error while loading /Users/punkish/Sites/app/app.pl: unable to load application app : not a valid prefix: `app', must start with a / at /usr/local/lib/perl5/site_perl/5.12.1/Dancer/App.pm line 32., referer: http://app.local/app1/ What gives? -- Puneet Kishor