The CSV import isn't working for me, I just get a blank screen, allthough I used the above optimalisations. Is there a way to track what's going on?

More in detail:
- when I use the "just show me the xml", the file gets uploaded, but I don't get to the next screen.
- when using "import immediately", I get to the second screen, and after assigning the fields and hitting it, I get the blank screen.

An other question, how come it's impossible to use node_import to import csv directly? The product fields just aren't listed on that one.

(Don't get me wrong, I'm just coming over from the other eC module and ubercart seems a lot better allready.)