diff --git a/kivyblocks/blocks.py b/kivyblocks/blocks.py index dfdc4a3..6e71e44 100755 --- a/kivyblocks/blocks.py +++ b/kivyblocks/blocks.py @@ -402,6 +402,10 @@ class Blocks(EventDispatcher): rf = RegistedFunction() name = desc.get('rfname') func = rf.get(name) + if func is None: + print('rfname(%s) not found' % name,rf.registKW) + raise Exception('rfname(%s) not found' % name) + params = desc.get('params',{}) d = self.getActionData(widget,desc) params.update(d)