From 7b0556bba764e4e305921d28a8ae3f1c6f220bed Mon Sep 17 00:00:00 2001
From: Collin Kidder <collink@kkmfg.com>
Date: Thu, 24 Mar 2016 22:17:40 -0400
Subject: [PATCH] Fix for crash in flowview when the clear button is pressed on
 the main screen.

---
 flowviewwindow.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/flowviewwindow.cpp b/flowviewwindow.cpp
index d4fe69d..424925e 100644
--- a/flowviewwindow.cpp
+++ b/flowviewwindow.cpp
@@ -656,6 +656,7 @@ void FlowViewWindow::updatePosition(bool forward)
 
 void FlowViewWindow::updateGraphLocation()
 {
+    if (frameCache.count() == 0) return;
     int start = currentPosition - 5;
     if (start < 0) start = 0;
     int end = currentPosition + 5;