Should fix problem if you have an project without a project ID (Test in new_project_spec.rb)

app/views/layouts/header/_new_dropdown.haml

@@ -18,7 +18,7 @@
           %li.divider
           %li.dropdown-bold-header GitLab
 
-      - if @project && @project.namespace
+      - if @project && @project.namespace && :project_id
         - create_project_issue = can?(current_user, :create_issue, @project)
         - merge_project = can?(current_user, :create_merge_request, @project) ? @project : (current_user && current_user.fork_of(@project))
         - create_project_snippet = can?(current_user, :create_project_snippet, @project)