diff --git a/Viewer/features/filesystem.js b/Viewer/features/filesystem.js
index 50cd6dc6..49748d3b 100755
--- a/Viewer/features/filesystem.js
+++ b/Viewer/features/filesystem.js
@@ -1874,6 +1874,7 @@ var FileSystemWriterActions = actions.Actions({
 				this.images[gid] || {}, 
 				data)
 
+
 			name = name 
 				|| pathlib.basename(
 					data.path 
@@ -1881,7 +1882,7 @@ var FileSystemWriterActions = actions.Actions({
 			name = name == '' ? 
 				gid || '' 
 				: name
-			var ext = name == '' ?
+			var ext = name != '' ?
 				pathlib.extname(name)
 				: ''
 			var to_ext = data.ext 
diff --git a/Viewer/package.json b/Viewer/package.json
index af1f7451..6a45549b 100644
--- a/Viewer/package.json
+++ b/Viewer/package.json
@@ -1,7 +1,7 @@
 {
   "name": "ImageGrid.Viewer.g4",
   "main": "index.html",
-  "version": "4.0.9a",
+  "version": "4.0.10a",
   "author": "Alex A. Naanou <alex.nanou@gmail.com> (https://github.com/flynx)",
   "contributors": [],
   "repository": "github:flynx/ImageGrid",