Fixes a crash with preferences, as well as fixes a bug where a

non-existing item can be added to the list even though it exists in the
users preferences.
Moved a script function retrieval into a try/catch block.
Fixed a file list bug, needed to make a copy and clear; also if a crash
happened the list would never be cleared, and a script could get stuck on
one file. Scripts should have their own try/catch around each individual
file if they want to continue processing files without interruption.

code/src/FileGroupTab.cs

@@ -562,18 +562,18 @@ namespace FileWatcher
             m_TickCounter.Enabled = false;
 
 
-            Form1.Instance.notifyIcon1.ShowBalloonTip(1000, "Script Running", "Running '" + ScriptPath + "'", ToolTipIcon.Info);
+            //Form1.Instance.notifyIcon1.ShowBalloonTip(500, "Script Running", "Running '" + ScriptPath + "'", ToolTipIcon.Info);
 
             //scriptWorker.RunWorkerAsync(m_UpdatedFiles);
 
-            // run script in separate thread
-            Func<List<string>, bool> updated = pyScope.GetVariable<Func<List<string>, bool>>("process_updated_files");
-
             try
             {
-                var updateFiles = m_UpdatedFiles;
+                var updateFiles = m_UpdatedFiles.ToList();
                 m_UpdatedFiles.Clear();
 
+                // run script in separate thread
+                Func<List<string>, bool> updated = pyScope.GetVariable<Func<List<string>, bool>>("process_updated_files");
+
                 updated(updateFiles);
 
                 Logger.Log("Just finished running '" + ScriptPath + "'");
@@ -602,6 +602,11 @@ namespace FileWatcher
                 {
                     Logger.Log("Directory not found exception in '" + ScriptPath + "':" + ex.Message + Environment.NewLine + ex.StackTrace + Environment.NewLine + ex.TargetSite);
                 }
+                else if (ex is System.IO.IOException)
+                {
+                    Logger.Log("IOException in '" + ScriptPath + "':" + ex.Message + Environment.NewLine + ex.StackTrace + Environment.NewLine + ex.TargetSite);
+                    Logger.Log("Your script had an IO exception, you should alter your script to catch individual file errors so you can try to process them all even when an exception happens. You may also want to alter your file IO in case you can get around this error.");
+                }
                 else
                 {
                     Logger.Log("Error running '" + ScriptPath + "':" + ex.Message + Environment.NewLine + ex.StackTrace);

code/src/NewFileGroup.cs

@@ -43,7 +43,10 @@ namespace FileWatcher
         private void createButton_Click(object sender, EventArgs e)
         {
             Directory.CreateDirectory(Path.GetDirectoryName(textBox3.Text));
-            using (var fileStream = File.Open(textBox3.Text, FileMode.OpenOrCreate, FileAccess.ReadWrite));
+            using (var fileStream = File.Open(textBox3.Text, FileMode.OpenOrCreate, FileAccess.ReadWrite))
+            {
+                // don't do anything, just create the file.
+            };
         }
 
         private void textBox3_KeyPress(object sender, KeyPressEventArgs e)

code/src/Preferences.cs

@@ -137,6 +137,8 @@ namespace FileWatcher
                 }
             }
 
+            defaultPrograms.RemoveAll(str => !programs.ContainsKey(str) || !File.Exists(programs[str].Path));
+
             UnboundBindingList = new BindingList<string>(defaultPrograms);
             foreach (string str in programs.Keys)
             {
@@ -209,11 +211,15 @@ namespace FileWatcher
         private void listBox1_SelectedValueChanged(object sender, EventArgs e)
         {
             if (listBox1.SelectedValue != null)
+            {
+                string selectedValue = (string)listBox1.SelectedValue;
+                if (programs.ContainsKey(selectedValue))
                 {
                     string path = programs[(string)listBox1.SelectedValue].Path;
                     textBox1.Text = path;
                 }
             }
+        }
 
         private void Preferences_FormClosing(object sender, FormClosingEventArgs e)
         {

code/src/TimerPlus.cs

@@ -26,14 +26,14 @@ namespace FileWatcher
         {
         }
 
-        public void Start()
+        public new void Start()
         {
             m_Running = true;
             m_Start = DateTime.Now;
             base.Start();
         }
 
-        public void Stop()
+        public new void Stop()
         {
             m_End = DateTime.Now;
             m_Running = false;