Endurion (On the other forum) said:
well, The pandora logo in Xfce is gone and I don´t know how to get it back to the bar.
For future reference, the way to get the menu button back is much simpler than a reflash: You need to right-click on the panel, click on "Add New Items", and then choose "Xfce Menu" from the window that appears, before clicking the "Add" button in the lower-right corner.
After this, you can right-click on the newly-added item and click on "Properties" in order to tweak it to your liking - you will want to uncheck the box labelled "Show title in button", because that prevents you from using an image for the menu button. You can assign an image to it by using the "Button icon:" option - the standard built-in icon for the menu is "op-start.png", which is easily found once you've clicked the "Button icon:" button.
I hope this is useful in the future!