Index: trunk/Nebulous-Server/lib/Nebulous/Server.pm
===================================================================
--- trunk/Nebulous-Server/lib/Nebulous/Server.pm	(revision 24331)
+++ trunk/Nebulous-Server/lib/Nebulous/Server.pm	(revision 24332)
@@ -1989,5 +1989,5 @@
         my $storage_filename = $self->_generate_storage_filename($key->path, $ins_id);
         unless (-d $storage_path) {
-            _retry(sub { mkpath(@_) }, $storage_path, 0, 0775)
+            _retry(sub { mkpath([$storage_path], 0, 0775) })
                 or die "can't create storage path: $storage_path";
         }