diff --git a/start.sh b/start.sh
index 2aa7429..c38e4c9 100644
--- a/start.sh
+++ b/start.sh
@@ -7,3 +7,7 @@ yarn global add gulp-cli
 gulp
 cp -r /opt/tmp/build/* /opt/meshviewer/build/
 rm -r /opt/tmp
+mkdir /opt/meshviewer/build/data
+mkdir /opt/meshviewer/build/data/tdf4
+mkdir /opt/meshviewer/build/data/tdf5
+mkdir /opt/meshviewer/build/data/tdf6