diff -r 1b22c36038c9 masterfs.windows/src/org/netbeans/modules/masterfs/watcher/windows/WindowsNotifier.java
--- a/masterfs.windows/src/org/netbeans/modules/masterfs/watcher/windows/WindowsNotifier.java	Wed Oct 09 07:34:17 2013 +0200
+++ b/masterfs.windows/src/org/netbeans/modules/masterfs/watcher/windows/WindowsNotifier.java	Wed Oct 09 13:00:18 2013 +0300
@@ -303,7 +303,7 @@
         
         String root = null;
 
-        if (path.length() > 3 && path.charAt(1) == ':') { // classic drive letter (e.g. C:\)
+        if (path.length() >= 3 && path.charAt(1) == ':') { // classic drive letter (e.g. C:\)
             root = path.substring(0, 3).replace('/', '\\');
             if (root.charAt(2) != '\\') {
                 throw new IOException("wrong path: " + path);