Index: app/views/repositories/_form.html.erb
===================================================================
--- app/views/repositories/_form.html.erb	(Revision 129)
+++ app/views/repositories/_form.html.erb	(Arbeitskopie)
@@ -18,7 +18,7 @@
 
 <% button_disabled = true %>
 <% if @repository %>
-<%   button_disabled = ! @repository.class.scm_available %>
+<%   button_disabled = ! @repository.class.scm_available || ( !ScmConfig['allow_add_local'] && @repository.new_record?) %>
 <%=    repository_field_tags(f, @repository)%>
 <% end %>
 </div>