IDE 1.5.1

io53:

cmaglie:
Try "ant clean" first.

Thank you, it worked. :slight_smile:

... but now I feel stupid. Got any ant argument for that?

You are not alone! I was stuck there for two days, before finding this post. Thanks a lot cmaglie for the trick!
My config is:
Arduino 1.5.1r2 (co-resident with Arduino 1.0.3)
Windows XP SP3, running on a Compaq NC6000