Index: scribus/pageitem_osgframe.cpp
===================================================================
--- scribus/pageitem_osgframe.cpp	(revision 0)
+++ scribus/pageitem_osgframe.cpp	(working copy)
@@ -110,7 +110,11 @@ void PageItem_OSGFrame::setImage(QImage &image)
 		QTemporaryFile *tempFile = new QTemporaryFile(QDir::tempPath() + "/scribus_temp_osg_XXXXXX.png");
 		tempFile->setAutoRemove(false);
-		tempFile->open();
+		if (!tempFile->open())
+		{
+			delete tempFile;
+			return;
+		}
 		QString imgName = getLongPathName(tempFile->fileName());
 		tempFile->close();
 		image.save(imgName, "PNG");
Index: scribus/ui/charselect.cpp
===================================================================
--- scribus/ui/charselect.cpp	(revision 0)
+++ scribus/ui/charselect.cpp	(working copy)
@@ -91,13 +91,20 @@ CharSelect::~CharSelect()
 
 void CharSelect::userNewChar(uint i, const QString& font)
 {
-	QString str = QString::fromUcs4(&i, 1);
+	const char32_t ch = static_cast<char32_t>(i);
+	QString str = QString::fromUcs4(&ch, 1);
 	emit insertUserSpecialChar(str, font);
 }
 
 void CharSelect::slot_insertSpecialChars(const QVector<uint> & chars)
 {
-	chToIns = QString::fromUcs4(chars.data(), chars.length());
+	QVector<char32_t> ucs4Chars;
+	ucs4Chars.reserve(chars.size());
+	for (uint ch : chars)
+		ucs4Chars.append(static_cast<char32_t>(ch));
+
+	chToIns = QString::fromUcs4(ucs4Chars.constData(), ucs4Chars.size());
 	slot_insertSpecialChar();
 }
 
Index: scribus/ui/smpstylewidget.cpp
===================================================================
--- scribus/ui/smpstylewidget.cpp	(revision 0)
+++ scribus/ui/smpstylewidget.cpp	(working copy)
@@ -881,7 +881,13 @@ void SMPStyleWidget::handleParEffectUseDropCap()
 
 void SMPStyleWidget::insertSpecialChars(const QVector<uint> &charCodes)
 {
-	QString chars = QString::fromUcs4(charCodes.data(), charCodes.length());
+	QVector<char32_t> ucs4Chars;
+	ucs4Chars.reserve(charCodes.size());
+	for (uint ch : charCodes)
+		ucs4Chars.append(static_cast<char32_t>(ch));
+
+	QString chars = QString::fromUcs4(ucs4Chars.constData(), ucs4Chars.size());
 	bulletStrEdit->lineEdit()->setText(chars);
 }