# Can't edit sketch file! **URL:** \ **Category:** Troubleshooting\ **Created:** [January 21, 2011, 6:49am UTC](https://forum.arduino.cc/t/cant-edit-sketch-file/49797 "2011-01-21T06:49:19Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![system](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/system/32/1140315_2.png) [@system](https://forum.arduino.cc/u/system)\ **Post date:** [January 21, 2011, 6:49am UTC](https://forum.arduino.cc/t/cant-edit-sketch-file/49797/1 "2011-01-21T06:49:19Z")
Forum, Total noob here with UNO and Macbook Pro. I open the BLINK sketch, upload it, led blinks... Life is good. Now, when I try to edit the file .. Nothing happens on screen. I can move the cursor around with the mouse and the keyboard but again, I can't make any modifications. I have done a 'save as..' to my desktop to make sure it's not write protected. No change. I have done 'verify disk permissions'. No change (but do get some errors on java... hmmmm) I have created a blank sketch... Same symptoms Here's something interesting when using 'comment/uncomment'. I get the following java errors: Exception in thread "AWT-EventQueue-0" java.lang.InternalError: Text component read only at processing.app.syntax.JEditTextArea.setSelectedText(JEditTextArea.java:1269) at processing.app.Editor.handleCommentUncomment(Editor.java:1730) at processing.app.Editor$TextAreaPopup$7.actionPerformed(Editor.java:2629) at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2028) at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2351) at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:387) at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:242) at javax.swing.AbstractButton.doClick(AbstractButton.java:389) at javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:1223) at com.apple.laf.AquaMenuItemUI.doClick(AquaMenuItemUI.java:137) at javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:1264) at java.awt.Component.processMouseEvent(Component.java:6352) at javax.swing.JComponent.processMouseEvent(JComponent.java:3267) at java.awt.Component.processEvent(Component.java:6117) at java.awt.Container.processEvent(Container.java:2085) at java.awt.Component.dispatchEventImpl(Component.java:4714) at java.awt.Container.dispatchEventImpl(Container.java:2143) at java.awt.Component.dispatchEvent(Component.java:4544) at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4621) at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4282) at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4212) at java.awt.Container.dispatchEventImpl(Container.java:2129) at java.awt.Window.dispatchEventImpl(Window.java:2478) at java.awt.Component.dispatchEvent(Component.java:4544) at java.awt.EventQueue.dispatchEvent(EventQueue.java:635) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:296) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:211) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:201) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:196) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:188) at java.awt.EventDispatchThread.run(EventDispatchThread.java:122) Might this be the source of the problem? Suggestions anyone? Thanks! Rob ---
**Author:** ![u0421793](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/u0421793/32/214044_2.png) [@u0421793](https://forum.arduino.cc/u/u0421793)\ **Post date:** [January 21, 2011, 10:49am UTC](https://forum.arduino.cc/t/cant-edit-sketch-file/49797/2 "2011-01-21T10:49:08Z")
Are you the only user account on that MacBook, or are there other users? ---
**Author:** ![smeezekitty](https://avatars.discourse-cdn.com/v4/letter/s/c4cdca/32.png) [@smeezekitty](https://forum.arduino.cc/u/smeezekitty)\ **Post date:** [January 22, 2011, 1:09am UTC](https://forum.arduino.cc/t/cant-edit-sketch-file/49797/3 "2011-01-22T01:09:54Z")
I know it sounds too simple but try closing the arduino software and restarting it. Sometimes strange bugs occur that can be resolved by restarting the software. BTW I sent you a personal message. ---
**Author:** ![system](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/system/32/1140315_2.png) [@system](https://forum.arduino.cc/u/system)\ **Post date:** [January 22, 2011, 3:49am UTC](https://forum.arduino.cc/t/cant-edit-sketch-file/49797/4 "2011-01-22T03:49:11Z")
I'm the only user on the system and have admin rights. Stopping/starting or... reinstalling for that matter.. does not help either. :-[ ---
**Author:** ![system](https://dub1.discourse-cdn.com/arduino/user_avatar/forum.arduino.cc/system/32/1140315_2.png) [@system](https://forum.arduino.cc/u/system)\ **Post date:** [May 6, 2021, 8:20pm UTC](https://forum.arduino.cc/t/cant-edit-sketch-file/49797/5 "2021-05-06T20:20:57Z")