Merge pull request #34 from acardona/fix-sync-issue

Attempt at fixing the synchronization issue arising when saving a file into an open folder

Author: ctrueden

src/main/java/org/scijava/ui/swing/script/FileSystemTree.java

@@ -172,14 +172,18 @@ public String toString() {
 
 		@Override
 		public synchronized int getChildCount() {
-			if (isRoot()) return super.getChildCount();
-			return new File(this.path).isDirectory() ? updatedChildrenFiles(false).length : 0;
+			return super.getChildCount();
 		}
 
 		@Override
 		public synchronized Node getChildAt(final int index) {
 			if (0 == getChildCount()) return null;
-			return (Node) super.getChildAt(index);
+			try {
+				return (Node) super.getChildAt(index);
+			} catch (ArrayIndexOutOfBoundsException ae) {
+				System.out.println("FileSystemTree: no child at index " + index + " for file at " + this.path);
+				return null;
+			}
 		}
 
 		public Icon getIcon() {