upload stops at 74%

[mtnbikeray]

uploading some of the examples were slow but complete after 30-45 seconds.  I modified the RF24 example and
now the upload stalls at 74%

[==================            ] 61% (90/147 pages)
[====================          ] 68% (100/147 pages)
[======================        ] 74% (110/147 pages)

I tried  erasing/resetting the board with the same results.


after further playing I got it to upload, but not sure why...
I'm sort of new to arduino. 
I removed all of the references to printf and it started working.
Why doesn't printf work?  I have other sketches that work with mu UNO, put don't output anything with my digix

Ray

[defragster]

Having written software with a gauge - I know there can be certain things that are done at certain %'s.  Does anyone know the steps of the upload progression that go along with the IDE transfer?

When I saw 'dropping printf works' - it made me wonder if at 74% it is loading or setting up library versus user code.  Perhaps something affecting a fixed memory location or some step that is skipped without it.