various small fixes

src/com/jpexs/decompiler/flash/gui/ImagePanel.java

@@ -916,7 +916,7 @@ public final class ImagePanel extends JPanel implements ActionListener, MediaDis
             int msPerFrame = frameRate == 0 ? 1000 : 1000 / frameRate;
 
             final int cnt = counter;
-            final boolean singleFrame = timeline.getFrameCount() <= 1 && timeline.isSingleFrame();
+            final boolean singleFrame = timeline.getRealFrameCount() <= 1 && timeline.isSingleFrame();
             shouldDraw.set(true);
             startTimer(cnt, singleFrame, msPerFrame);
         }

src/com/jpexs/decompiler/flash/gui/LoadingPanel.java

@@ -139,4 +139,16 @@ public class LoadingPanel extends JPanel {
         g2.setTransform(t);
         g2.drawImage(lastImage, 0, 0, this);
     }
+
+    @Override
+    public void setVisible(boolean visible) {
+        if (!visible) {
+            if (drawTimer != null) {
+                drawTimer.cancel();
+                drawTimer = null;
+            }
+        }
+
+        super.setVisible(visible);
+    }
 }

src/com/jpexs/decompiler/flash/gui/Main.java

@@ -439,9 +439,11 @@ public class Main {
                 } catch (OutOfMemoryError ex) {
                     logger.log(Level.SEVERE, null, ex);
                     View.showMessageDialog(null, "Cannot load SWF file. Out of memory.");
+                    continue;
                 } catch (Exception ex) {
                     logger.log(Level.SEVERE, null, ex);
                     View.showMessageDialog(null, "Cannot load SWF file.");
+                    continue;
                 }
 
                 final SWFList swfs1 = swfs;
@@ -1106,7 +1108,10 @@ public class Main {
 
                         MainPanel mainPanel = mainFrame.getPanel();
                         TreePath tp = View.getTreePathByPathStrings(mainPanel.tagTree, Arrays.asList(path));
-                        mainPanel.setTagTreeSelectedNode((TreeItem) tp.getLastPathComponent());
+                        if (tp != null) {
+                            // the current view is the Resources view, otherwise tp is null
+                            mainPanel.setTagTreeSelectedNode((TreeItem) tp.getLastPathComponent());
+                        }
                     }
                 });
             }

src/com/jpexs/decompiler/flash/gui/View.java

@@ -538,6 +538,10 @@ public class View {
 
     public static TreePath getTreePathByPathStrings(JTree tree, List<String> pathAsStringList) {
         TreeModel model = tree.getModel();
+        if (model == null) {
+            return null;
+        }
+
         Object node = model.getRoot();
 
         if (pathAsStringList.isEmpty()) {

src/com/jpexs/decompiler/flash/gui/player/FlashPlayerPanel.java

@@ -184,21 +184,30 @@ public final class FlashPlayerPanel extends Panel implements Closeable, MediaDis
             @Override
             public void run() {
 
-                boolean changed = false;
+                try {
+                    ShockwaveFlash flash1 = flash;
+                    if (flash1 == null) {
+                        return;
+                    }
 
-                boolean isPlaying = flash.IsPlaying();
-                if (this.isPlaying != isPlaying) {
-                    this.isPlaying = isPlaying;
-                }
+                    boolean changed = false;
 
-                int currentFrame = flash.CurrentFrame();
-                if (this.currentFrame != currentFrame) {
-                    this.currentFrame = currentFrame;
-                    changed = true;
-                }
+                    boolean isPlaying = flash1.IsPlaying();
+                    if (this.isPlaying != isPlaying) {
+                        this.isPlaying = isPlaying;
+                    }
 
-                if (changed) {
-                    fireMediaDisplayStateChanged();
+                    int currentFrame = flash1.CurrentFrame();
+                    if (this.currentFrame != currentFrame) {
+                        this.currentFrame = currentFrame;
+                        changed = true;
+                    }
+
+                    if (changed) {
+                        fireMediaDisplayStateChanged();
+                    }
+                } catch (Exception ex) {
+                    // ignore
                 }
             }
         }, 100, 100);