Text editor unusable in Energia 0101E0010 in Energia - MSP Posted October 8, 2013 Make sure that do do NOT have "User external editor" selected in the Energia Preferences. When this option is selected you will not be able to edit your Sketch in the Energia editor. Re, tools menu is slow: What OS are you on? Windows, Mac or Linux? This is fresh install of energia and there is no external editor selected in preferences. I'm using 64bit win7.