From fd6c346467a8c34ed958b48955e6dfd4dea47949 Mon Sep 17 00:00:00 2001
From: onyx-and-iris <75868496+onyx-and-iris@users.noreply.github.com>
Date: Sat, 16 Jul 2022 22:14:02 +0100
Subject: [PATCH] bug fixed in submixframe in call to grid_info()

---
 vmcompact/gainlayer.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/vmcompact/gainlayer.py b/vmcompact/gainlayer.py
index 4fbcec8..393125b 100644
--- a/vmcompact/gainlayer.py
+++ b/vmcompact/gainlayer.py
@@ -192,7 +192,7 @@ class SubMixFrame(ttk.Frame):
             if parent.bus_frame:
                 parent.bus_frame.grid_remove()
         else:
-            if parent.bus_frame:
+            if parent.bus_frame and parent.bus_frame.grid_info():
                 self.grid(
                     row=parent.bus_frame.grid_info()["row"], column=0, sticky=(tk.W)
                 )