From 075cc425081d8c0d3d57363bbbecad8b04d9ebbf Mon Sep 17 00:00:00 2001
From: Corin Wagen <corin.wagen@gmail.com>
Date: Wed, 22 Jul 2020 15:45:58 -0400
Subject: [PATCH] added something

---
 cctk/parse_gaussian.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/cctk/parse_gaussian.py b/cctk/parse_gaussian.py
index e549a3b..f7b4f77 100644
--- a/cctk/parse_gaussian.py
+++ b/cctk/parse_gaussian.py
@@ -929,6 +929,9 @@ def parse_modes(freq_block, num_atoms, hpmodes=False):
     force_ks = list()
     displacements = list()
 
+    if len(freq_block) == 0:
+        return None
+
     chunks = freq_block[0].split("Freq")
 
     if hpmodes: