From: Juergen Spitzmueller <spitz@lyx.org>
Date: Tue, 29 May 2012 12:21:29 +0000 (+0200)
Subject: Fix crash when removing last converter (bug 8178)
X-Git-Tag: 2.1.0beta1~1824
X-Git-Url: https://git.lyx.org/gitweb/?a=commitdiff_plain;h=ab3491adeffbda3161f086da53dc69041ccbf629;p=features.git

Fix crash when removing last converter (bug 8178)
---

diff --git a/src/frontends/qt4/GuiPrefs.cpp b/src/frontends/qt4/GuiPrefs.cpp
index 2302cc9fae..39f68412cd 100644
--- a/src/frontends/qt4/GuiPrefs.cpp
+++ b/src/frontends/qt4/GuiPrefs.cpp
@@ -1694,10 +1694,16 @@ void PrefConverters::updateButtons()
 	bool const valid = !(converterED->text().isEmpty()
 		|| from.name() == to.name());
 
-	int const cnr = convertersLW->currentItem()->type();
-	Converter const & c = form_->converters().get(cnr);
-	string const old_command = c.command;
-	string const old_flag = c.flags;
+	string old_command;
+	string old_flag;
+
+	if (convertersLW->count() > 0) {
+		int const cnr = convertersLW->currentItem()->type();
+		Converter const & c = form_->converters().get(cnr);
+		old_command = c.command;
+		old_flag = c.flags;
+	}
+
 	string const new_command = fromqstr(converterED->text());
 	string const new_flag = fromqstr(converterFlagED->text());