diff --git a/src/calibre/gui2/dialogs/message_box.py b/src/calibre/gui2/dialogs/message_box.py
index 3a330fe1f9..96d85dab8d 100644
--- a/src/calibre/gui2/dialogs/message_box.py
+++ b/src/calibre/gui2/dialogs/message_box.py
@@ -5,11 +5,13 @@ __license__   = 'GPL v3'
 __copyright__ = '2011, Kovid Goyal <kovid@kovidgoyal.net>'
 __docformat__ = 'restructuredtext en'
 
+import sys
 
 from PyQt4.Qt import (QDialog, QIcon, QApplication, QSize, QKeySequence,
-    QAction, Qt, QTextBrowser, QDialogButtonBox, QVBoxLayout)
+    QAction, Qt, QTextBrowser, QDialogButtonBox, QVBoxLayout, QGridLayout,
+    QLabel, QPlainTextEdit, QTextDocument)
 
-from calibre.constants import __version__
+from calibre.constants import __version__, isfrozen
 from calibre.gui2.dialogs.message_box_ui import Ui_Dialog
 
 class MessageBox(QDialog, Ui_Dialog): # {{{
@@ -248,9 +250,95 @@ class ErrorNotification(MessageBox): # {{{
         _proceed_memory.remove(self)
 # }}}
 
+class JobError(QDialog): # {{{
+
+    WIDTH = 600
+
+    def __init__(self, gui):
+        QDialog.__init__(self, gui)
+        self.gui = gui
+        self.queue = []
+
+        self._layout = l = QGridLayout()
+        self.setLayout(l)
+        self.icon = QIcon(I('dialog_error.png'))
+        self.setWindowIcon(self.icon)
+        self.icon_label = QLabel()
+        self.icon_label.setPixmap(self.icon.pixmap(128, 128))
+        self.icon_label.setMaximumSize(QSize(128, 128))
+        self.msg_label = QLabel('<p>&nbsp;')
+        self.msg_label.setWordWrap(True)
+        self.msg_label.setTextFormat(Qt.RichText)
+        self.det_msg = QPlainTextEdit(self)
+        self.det_msg.setVisible(False)
+
+        self.bb = QDialogButtonBox(QDialogButtonBox.Close, parent=self)
+        self.bb.accepted.connect(self.accept)
+        self.bb.rejected.connect(self.reject)
+        self.ctc_button = self.bb.addButton(_('&Copy to clipboard'),
+                self.bb.ActionRole)
+        self.ctc_button.clicked.connect(self.copy_to_clipboard)
+        self.show_det_msg = _('Show &details')
+        self.hide_det_msg = _('Hide &details')
+        self.det_msg_toggle = self.bb.addButton(self.show_det_msg, self.bb.ActionRole)
+        self.det_msg_toggle.clicked.connect(self.toggle_det_msg)
+        self.det_msg_toggle.setToolTip(
+                _('Show detailed information about this error'))
+
+        l.addWidget(self.icon_label, 0, 0, 1, 1)
+        l.addWidget(self.msg_label,  0, 1, 1, 1, Qt.AlignLeft|Qt.AlignTop)
+        l.addWidget(self.det_msg, 1, 0, 1, 2)
+
+        l.addWidget(self.bb, 2, 0, 1, 2, Qt.AlignRight|Qt.AlignBottom)
+
+        self.setModal(False)
+        self.base_height = max(200, self.sizeHint().height() + 20)
+        self.do_resize()
+
+    def copy_to_clipboard(self, *args):
+        d = QTextDocument()
+        d.setHtml(self.msg_label.text())
+        QApplication.clipboard().setText(
+                u'calibre, version %s (%s, isfrozen: %s)\n%s: %s\n\n%s' %
+                (__version__, sys.platform, isfrozen,
+                    unicode(self.windowTitle()), unicode(d.toPlainText()),
+                    unicode(self.det_msg.toPlainText())))
+        if hasattr(self, 'ctc_button'):
+            self.ctc_button.setText(_('Copied'))
+
+    def toggle_det_msg(self, *args):
+        vis = unicode(self.det_msg_toggle.text()) == self.hide_det_msg
+        self.det_msg_toggle.setText(self.show_det_msg if vis else
+                self.hide_det_msg)
+        self.det_msg.setVisible(not vis)
+        self.do_resize()
+
+    def do_resize(self):
+        h = self.base_height
+        if self.det_msg.isVisible():
+            h += 250
+        self.resize(QSize(self.WIDTH, h))
+
+    def showEvent(self, ev):
+        ret = QDialog.showEvent(self, ev)
+        self.bb.button(self.bb.Close).setFocus(Qt.OtherFocusReason)
+        return ret
+
+# }}}
+
 if __name__ == '__main__':
     app = QApplication([])
-    from calibre.gui2 import question_dialog
-    print question_dialog(None, 'title', 'msg <a href="http://google.com">goog</a> ',
-            det_msg='det '*1000,
-            show_copy_button=True)
+    from calibre.gui2.preferences import init_gui
+    gui = init_gui()
+    d = JobError(gui)
+    d.show()
+    app.exec_()
+    gui.shutdown()
+
+# if __name__ == '__main__':
+#     app = QApplication([])
+#     from calibre.gui2 import question_dialog
+#     print question_dialog(None, 'title', 'msg <a href="http://google.com">goog</a> ',
+#             det_msg='det '*1000,
+#             show_copy_button=True)
+
diff --git a/src/calibre/library/catalogs/csv_xml.py b/src/calibre/library/catalogs/csv_xml.py
index c8b414c6be..0b7df385a1 100644
--- a/src/calibre/library/catalogs/csv_xml.py
+++ b/src/calibre/library/catalogs/csv_xml.py
@@ -93,6 +93,8 @@ class CSV_XML(CatalogPlugin):
             for entry in data:
                 entry['ondevice'] = db.catalog_plugin_on_device_temp_mapping[entry['id']]['ondevice']
 
+        fm = {x:db.field_metadata.get(x, {}) for x in fields}
+
         if self.fmt == 'csv':
             outfile = codecs.open(path_to_output, 'w', 'utf8')
 
@@ -131,6 +133,8 @@ class CSV_XML(CatalogPlugin):
                     elif field == 'comments':
                         item = item.replace(u'\r\n',u' ')
                         item = item.replace(u'\n',u' ')
+                    elif fm.get(field, {}).get('datatype', None) == 'rating' and item:
+                        item = u'%.2g'%(item/2.0)
 
                     # Convert HTML to markdown text
                     if type(item) is unicode:
@@ -168,6 +172,9 @@ class CSV_XML(CatalogPlugin):
                         if not val:
                             continue
                         if not isinstance(val, (str, unicode)):
+                            if (fm.get(field, {}).get('datatype', None) ==
+                                    'rating' and val):
+                                val = u'%.2g'%(val/2.0)
                             val = unicode(val)
                         item = getattr(E, field)(val)
                         record.append(item)