Added sanity checks in core/plugin.py in case user plugins directory does not exist.

src/binwalk/core/plugin.py

@@ -170,8 +170,9 @@ class Plugins(object):
         }
 
         for key in plugins.keys():
-            plugins[key]['path'] = self.settings.paths[key][self.settings.PLUGINS]
+            plugins[key]['path'] = self.settings.get_file_path(key, self.settings.PLUGINS)
 
+            if plugins[key]['path']:
                 for file_name in os.listdir(plugins[key]['path']):
                     if file_name.endswith(self.MODULE_EXTENSION):
                         module = file_name[:-len(self.MODULE_EXTENSION)]
@@ -203,7 +204,12 @@ class Plugins(object):
 
     def _load_plugin_modules(self, plugins):
         for module in plugins['modules']:
+            try:
                 file_path = os.path.join(plugins['path'], module + self.MODULE_EXTENSION)
+            except KeyboardInterrupt as e:
+                raise e
+            except Exception:
+                continue
 
             try:
                 plugin = imp.load_source(module, file_path)