Problem with uploading marlin to sanguinololu (no replies)

I am having issues with loading the firmware on to my sanguinololu, I just flashed the sanguino bootloader to the 1284p-pu using the arduinoISP method, now when I try uploading marlin I get

java.lang.NullPointerException
	at processing.app.debug.AvrdudeUploader.getProgrammerCommands(AvrdudeUploader.java:226)
	at processing.app.debug.AvrdudeUploader.uploadUsingPreferences(AvrdudeUploader.java:62)
	at processing.app.Sketch.upload(Sketch.java:1671)
	at processing.app.Sketch.exportApplet(Sketch.java:1627)
	at processing.app.Sketch.exportApplet(Sketch.java:1599)
	at processing.app.Editor$DefaultExportAppHandler.run(Editor.java:2416)
	at java.lang.Thread.run(Thread.java:619)

Has anyone seen this before? Thanks!