Index: trunk/src/org/openstreetmap/josm/plugins/Plugin.java =================================================================== --- trunk/src/org/openstreetmap/josm/plugins/Plugin.java (revision 5986) +++ trunk/src/org/openstreetmap/josm/plugins/Plugin.java (revision 5987) @@ -113,4 +113,7 @@ out = new FileOutputStream(new File(pluginDirName, to)); in = getClass().getResourceAsStream(from); + if (in == null) { + throw new IOException("Resource not found: "+from); + } byte[] buffer = new byte[8192]; for(int len = in.read(buffer); len > 0; len = in.read(buffer)) { Index: trunk/src/org/openstreetmap/josm/plugins/PluginHandler.java =================================================================== --- trunk/src/org/openstreetmap/josm/plugins/PluginHandler.java (revision 5986) +++ trunk/src/org/openstreetmap/josm/plugins/PluginHandler.java (revision 5987) @@ -424,6 +424,12 @@ return false; } - - return checkRequiredPluginsPreconditions(parent, plugins, plugin, true); + + // Add all plugins already loaded (to include early plugins when checking late ones) + Collection allPlugins = new HashSet(plugins); + for (PluginProxy proxy : pluginList) { + allPlugins.add(proxy.getPluginInformation()); + } + + return checkRequiredPluginsPreconditions(parent, allPlugins, plugin, true); } @@ -513,10 +519,14 @@ msg = null; } catch (PluginException e) { - System.err.print(e.getMessage()); + System.err.println(e.getMessage()); Throwable cause = e.getCause(); if (cause != null) { - System.err.print(". " + cause.getClass().getName() + ": " + cause.getLocalizedMessage()); - } - System.err.println(); + msg = cause.getLocalizedMessage(); + if (msg != null) { + System.err.println("Cause: " + cause.getClass().getName()+": " + msg); + } else { + cause.printStackTrace(); + } + } if (e.getCause() instanceof ClassNotFoundException) { msg = tr("Could not load plugin {0} because the plugin
main class ''{1}'' was not found.
"