fix `lassie snuffle` with automatic grid

src/config.py

@@ -123,6 +123,13 @@ class Config(HasPaths):
         self._events = None
         self._config_name = 'untitled'
 
+    def setup_image_function_contributions(self):
+        '''
+        Post-init setup of image function contributors.
+        '''
+        for ifc in self.image_function_contributions:
+            ifc.setup(self)
+
     def set_config_name(self, config_name):
         self._config_name = config_name
 
@@ -195,6 +202,8 @@ class Config(HasPaths):
     def get_grid(self):
         '''Get grid or make default grid.'''
 
+        self.setup_image_function_contributions()
+
         if self._grid is None:
 
             if not self.grid:

src/core.py

@@ -147,9 +147,8 @@ def search(
     events_path = config.get_events_path()
     figures_path_template = config.get_figures_path_template()
 
+    config.setup_image_function_contributions()
     ifcs = config.image_function_contributions
-    for ifc in ifcs:
-        ifc.setup(config)
 
     grid = config.get_grid()
     receivers = config.get_receivers()