Index: app/controllers/projects_controller.rb
===================================================================
--- app/controllers/projects_controller.rb	(revision 1704)
+++ app/controllers/projects_controller.rb	(working copy)
@@ -187,13 +187,14 @@
   end
 
   def add_file
+    @versions = @project.versions.sort
+    @versions_empty = @versions.empty?
     if request.post?
       @version = @project.versions.find_by_id(params[:version_id])
       attachments = attach_files(@version, params[:attachments])
       Mailer.deliver_attachments_added(attachments) if !attachments.empty? && Setting.notified_events.include?('file_added')
       redirect_to :controller => 'projects', :action => 'list_files', :id => @project
     end
-    @versions = @project.versions.sort
   end
   
   def list_files
Index: app/views/projects/_no_versions.rhtml
===================================================================
--- app/views/projects/_no_versions.rhtml	(revision 0)
+++ app/views/projects/_no_versions.rhtml	(revision 0)
@@ -0,0 +1,3 @@
+<div class="nodata">
+  <%= simple_format(l(:text_no_project_versions)) %>
+</div>
Index: app/views/projects/add_file.rhtml
===================================================================
--- app/views/projects/add_file.rhtml	(revision 1704)
+++ app/views/projects/add_file.rhtml	(working copy)
@@ -1,5 +1,7 @@
 <h2><%=l(:label_attachment_new)%></h2>
 
+<%= render :partial => 'no_versions' if @versions_empty %>
+
 <%= error_messages_for 'attachment' %>
 <div class="box">
 <% form_tag({ :action => 'add_file', :id => @project }, :multipart => true, :class => "tabular") do %>
Index: lang/en.yml
===================================================================
--- lang/en.yml	(revision 1704)
+++ lang/en.yml	(working copy)
@@ -593,6 +593,7 @@
 text_issue_category_reassign_to: Reassign issues to this category
 text_user_mail_option: "For unselected projects, you will only receive notifications about things you watch or you're involved in (eg. issues you're the author or assignee)."
 text_no_configuration_data: "Roles, trackers, issue statuses and workflow have not been configured yet.\nIt is highly recommended to load the default configuration. You will be able to modify it once loaded."
+text_no_project_versions: "Versions have not been configured for this project.\nYou must create at least one version for this project before you can attach files."
 text_load_default_configuration: Load the default configuration
 text_status_changed_by_changeset: Applied in changeset %s.
 text_issues_destroy_confirmation: 'Are you sure you want to delete the selected issue(s) ?'