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Description
I sat and looked at this message for a long time, and upgraded my Arduino version, before determing what specific user error I was making- I had the wrong programmer selected. Based on the issues and other Googling I'm not the first person to get this NPE. It would be helpful if there was a better error message in the console, at a minimum.
I assume that targetPlatform is null at this point in the code, so targetPlatform.getProgrammer(..); fails.
java.lang.NullPointerException
at cc.arduino.packages.uploaders.SerialUploader.uploadUsingProgrammer(SerialUploader.java:295)
at cc.arduino.packages.uploaders.SerialUploader.uploadUsingPreferences(SerialUploader.java:90)
at cc.arduino.UploaderUtils.upload(UploaderUtils.java:77)
at processing.app.SketchController.upload(SketchController.java:732)
at processing.app.SketchController.exportApplet(SketchController.java:703)
at processing.app.Editor$UploadHandler.run(Editor.java:2047)
at java.lang.Thread.run(Thread.java:748)