diff --git a/extensions/fablabchemnitz/paths_to_openscad/paths_to_openscad.py b/extensions/fablabchemnitz/paths_to_openscad/paths_to_openscad.py
index f478d049..d23f131f 100644
--- a/extensions/fablabchemnitz/paths_to_openscad/paths_to_openscad.py
+++ b/extensions/fablabchemnitz/paths_to_openscad/paths_to_openscad.py
@@ -1413,6 +1413,7 @@ module chamfer_sphere(rad=chamfer, res=chamfer_fn)
                 try:
                     with subprocess.Popen(cmd, shell=True, stdin=tty, stdout=tty, stderr=tty) as proc:
                         proc.wait()
+                        tty.close()
                 except OSError as e:
                     raise OSError("%s failed: errno=%d %s" % (cmd, e.errno, e.strerror))
                 try:
diff --git a/extensions/fablabchemnitz/webp_import/output.xml b/extensions/fablabchemnitz/webp_import/output.xml
deleted file mode 100644
index e69de29b..00000000
diff --git a/extensions/fablabchemnitz/webp_import/person.xml b/extensions/fablabchemnitz/webp_import/person.xml
deleted file mode 100644
index 572613cf..00000000
--- a/extensions/fablabchemnitz/webp_import/person.xml
+++ /dev/null
@@ -1 +0,0 @@
-<QuoteWerksXML><AppVersionMajor>5.1</AppVersionMajor></QuoteWerksXML>
\ No newline at end of file