diff --git a/electron/src/main/index.js b/electron/src/main/index.js
index 09fd2959b..d6f259fe1 100644
--- a/electron/src/main/index.js
+++ b/electron/src/main/index.js
@@ -80,7 +80,9 @@ app.on('activate', () => {
 
 ipcMain.on('save-pdf', function (event, pageSize) {
     mainWindow.webContents.printToPDF({"pageSize": pageSize}, function(error, data) {
-        dialog.showSaveDialog(mainWindow, {"defaultPath": "inkstitch.pdf"}, function(filename, bookmark) {
+        dialog.showSaveDialog(mainWindow, {"defaultPath": "inkstitch.pdf",
+                                           "filters": [{ name: 'PDF', extensions: ['pdf'] }]
+                                          }, function(filename, bookmark) {
             if (typeof filename !== 'undefined')
                 fs.writeFileSync(filename, data, 'utf-8');
         })
diff --git a/lib/elements/fill_stitch.py b/lib/elements/fill_stitch.py
index a0ab0d335..ad2b53723 100644
--- a/lib/elements/fill_stitch.py
+++ b/lib/elements/fill_stitch.py
@@ -269,6 +269,8 @@ class FillStitch(EmbroideryElement):
 
         if isinstance(valid_shape, shgeo.Polygon):
             return shgeo.MultiPolygon([valid_shape])
+        if isinstance(valid_shape, shgeo.LineString):
+            return shgeo.MultiPolygon([])
 
         polygons = []
         for polygon in valid_shape.geoms:
diff --git a/lib/extensions/convert_to_satin.py b/lib/extensions/convert_to_satin.py
index 9950b2e8a..938507892 100644
--- a/lib/extensions/convert_to_satin.py
+++ b/lib/extensions/convert_to_satin.py
@@ -35,12 +35,15 @@ class ConvertToSatin(InkstitchExtension):
             inkex.errormsg(_("Please select at least one line to convert to a satin column."))
             return
 
-        if not all(isinstance(item, Stroke) for item in self.elements):
+        if not any(isinstance(item, Stroke) for item in self.elements):
             # L10N: Convert To Satin extension, user selected one or more objects that were not lines.
             inkex.errormsg(_("Only simple lines may be converted to satin columns."))
             return
 
         for element in self.elements:
+            if not isinstance(element, Stroke):
+                continue
+
             parent = element.node.getparent()
             index = parent.index(element.node)
             correction_transform = get_correction_transform(element.node)
diff --git a/lib/stitches/auto_run.py b/lib/stitches/auto_run.py
index ab5762a35..ff26eb165 100644
--- a/lib/stitches/auto_run.py
+++ b/lib/stitches/auto_run.py
@@ -270,6 +270,7 @@ def create_element(path, position, direction, element):
 
     # Set Ink/Stitch attributes
     stitch_length = element.node.get(INKSTITCH_ATTRIBS['running_stitch_length_mm'], '')
+    tolerance = element.node.get(INKSTITCH_ATTRIBS['running_stitch_tolerance_mm'], '')
     repeats = int(element.node.get(INKSTITCH_ATTRIBS['repeats'], 1))
     if repeats % 2 == 0:
         repeats -= 1
@@ -284,6 +285,8 @@ def create_element(path, position, direction, element):
     else:
         if stitch_length:
             node.set(INKSTITCH_ATTRIBS['running_stitch_length_mm'], stitch_length)
+        if tolerance:
+            node.set(INKSTITCH_ATTRIBS['running_stitch_tolerance_mm'], tolerance)
         node.set("style", element.node.style + inkex.Style("stroke-dasharray:0.5,0.5;fill:none;"))
     return Stroke(node)