diff --git a/extensions/fablabchemnitz/laser_check/laser_check.py b/extensions/fablabchemnitz/laser_check/laser_check.py
index ef36dc9..41dcdf6 100644
--- a/extensions/fablabchemnitz/laser_check/laser_check.py
+++ b/extensions/fablabchemnitz/laser_check/laser_check.py
@@ -205,12 +205,8 @@ class LaserCheck(inkex.EffectExtension):
         
         #that size is actually not the stored one on file system
         #filesize = len(etree.tostring(self.document, pretty_print=True).decode('UTF-8')) / 1000
-        filesize = 0
-        if os.path.exists(self.document_path()) is False:
-            inkex.utils.debug("WARNING: File was not saved yet!")
-        else:
-            filesize = os.path.getsize(self.document_path()) / 1000
-        inkex.utils.debug("File size: {:0.1f} KB (That might be wrong. Check first for recently saved file)".format(filesize))
+        filesize = os.path.getsize(so.input_file) / 1000
+        inkex.utils.debug("File size: {:0.1f} KB".format(filesize))
         if filesize > so.filesize_max:
             inkex.utils.debug("WARNING: file size is larger than allowed: {} KB > {} KB".format(filesize, so.filesize_max))
             
diff --git a/extensions/fablabchemnitz/qcad_svg_to_modern_dxf/qcad-dxf-script.js b/extensions/fablabchemnitz/qcad_svg_to_modern_dxf/qcad-dxf-script.js
index 31e7f6d..23ee50e 100644
--- a/extensions/fablabchemnitz/qcad_svg_to_modern_dxf/qcad-dxf-script.js
+++ b/extensions/fablabchemnitz/qcad_svg_to_modern_dxf/qcad-dxf-script.js
@@ -10,13 +10,15 @@ var storage = new RMemoryStorage();
 var spatialIndex = new RSpatialIndexSimple();
 var doc = new RDocument(storage, spatialIndex);
 var di = new RDocumentInterface(doc);
+
 var tolerance = $QCAD_TOLERANCE$;
+var purge_duplicates = $QCAD_PURGE_DUPLICATES$;
+var join_polylines = $QCAD_JOIN_POLYLINES$;
 
 const importer = new SvgImporter(doc);
 
 di.importFile("$SVG_PATH$");
 
-var purge_duplicates = $QCAD_PURGE_DUPLICATES$;
 if (purge_duplicates === true) {
     Duplicates.findDuplicates(di, true, tolerance, 0.0, true);
     var counter = doc.countSelectedEntities();
@@ -25,8 +27,10 @@ if (purge_duplicates === true) {
     print("Purged duplicates: " + counter);
 }
 
-di.selectAll();
+if (join_polylines === true) {
+    di.selectAll();
+    PolylineFromSelection.autoJoinSegments(di, tolerance);
+}
 
-PolylineFromSelection.autoJoinSegments(di, tolerance);
 di.exportFile("$EXPORT_PATH$", "$QCAD_DXF_FORMAT$");
 di.destroy();
\ No newline at end of file
diff --git a/extensions/fablabchemnitz/qcad_svg_to_modern_dxf/qcad_svg_to_modern_dxf.inx b/extensions/fablabchemnitz/qcad_svg_to_modern_dxf/qcad_svg_to_modern_dxf.inx
index 9c0220f..a291816 100644
--- a/extensions/fablabchemnitz/qcad_svg_to_modern_dxf/qcad_svg_to_modern_dxf.inx
+++ b/extensions/fablabchemnitz/qcad_svg_to_modern_dxf/qcad_svg_to_modern_dxf.inx
@@ -19,6 +19,7 @@
                 <option value="R10 DXF">R10 (OpenDesign)</option>
                 <option value="R9 DXF">R9 (OpenDesign)</option>
             </param>
+            <param name="qcad_join_polylines" type="bool" gui-text="Join Polylines">true</param>
             <param name="qcad_tolerance" type="float" min="0.0000001" max="999999" precision="3" gui-text="Polyline tolerance" gui-description="">0.001</param>
             <param name="qcad_purge_duplicates" type="bool" gui-text="Purge duplicate lines">false</param>
             <param name="qcad_pro_path" type="path" mode="file" gui-text="QCAD Pro executable path" gui-description="Do not use Community Edition, as it will not work.">~/opt/qcad-3.28.2-pro-linux-x86_64/qcad</param>
diff --git a/extensions/fablabchemnitz/qcad_svg_to_modern_dxf/qcad_svg_to_modern_dxf.py b/extensions/fablabchemnitz/qcad_svg_to_modern_dxf/qcad_svg_to_modern_dxf.py
index b2ad26e..c7c9929 100644
--- a/extensions/fablabchemnitz/qcad_svg_to_modern_dxf/qcad_svg_to_modern_dxf.py
+++ b/extensions/fablabchemnitz/qcad_svg_to_modern_dxf/qcad_svg_to_modern_dxf.py
@@ -28,6 +28,7 @@ class QCAD_SVG(inkex.OutputExtension):
     def add_arguments(self, pars):
         pars.add_argument("--tab")
         pars.add_argument("--qcad_dxf_format", default="dxflib", help="DXF Export Type")
+        pars.add_argument("--qcad_join_polylines", type=inkex.Boolean, default=True, help="Join Polylines")
         pars.add_argument("--qcad_tolerance", type=float, default=0.001, help="Polyline Tolerance")
         pars.add_argument("--qcad_purge_duplicates", type=inkex.Boolean, default=False, help="Purge duplicate lines")
         pars.add_argument("--qcad_pro_path", default="~/opt/qcad-3.28.2-pro-linux-x86_64/qcad", help="Location of qcad pro executable")
@@ -43,18 +44,28 @@ class QCAD_SVG(inkex.OutputExtension):
 
     def effect(self):
         so = self.options
+        
+        if os.path.exists(so.input_file) is False:
+            inkex.utils.debug("WARNING: File was not saved yet! Try again after saving.")
+            exit(1)
+        
         qcad_pro_path = os.path.relpath(so.qcad_pro_path)
         tmpdir_path = os.path.dirname(so.input_file)   
         export_path = self.document_path()
         qcad_script = "qcad-dxf-script.js"
+        if so.qcad_join_polylines is True:
+            qcad_join_polylines = "true"
+        else:
+            qcad_join_polylines = "false"
+        qcad_tolerance = "{:6.6f}".format(so.qcad_tolerance)
         if so.qcad_purge_duplicates is True:
             qcad_purge_duplicates = "true"
         else:
             qcad_purge_duplicates = "false"
-        qcad_tolerance = "{:6.6f}".format(so.qcad_tolerance)
         qcad_dxf_format = so.qcad_dxf_format
         
         if so.debug is True:
+            inkex.utils.debug("Input file:{}".format(so.input_file))
             inkex.utils.debug("/tmp dir Path:{}".format(tmpdir_path))
             inkex.utils.debug("Export Path{}".format(export_path))
             inkex.utils.debug("QCAD Pro Path: {}".format(qcad_pro_path))
@@ -69,6 +80,7 @@ class QCAD_SVG(inkex.OutputExtension):
         shutil.copy2(qcad_script, tmpdir_path)
         qcad_script_tmp = os.path.join(tmpdir_path, qcad_script)
         self.inplace_change(qcad_script_tmp, "$SVG_PATH$", target_file)
+        self.inplace_change(qcad_script_tmp, "$QCAD_JOIN_POLYLINES$", qcad_join_polylines)
         self.inplace_change(qcad_script_tmp, "$QCAD_TOLERANCE$", qcad_tolerance)
         self.inplace_change(qcad_script_tmp, "$EXPORT_PATH$", export_path)
         self.inplace_change(qcad_script_tmp, "$QCAD_DXF_FORMAT$", qcad_dxf_format)