You problem is not a bug, but a feature :-)
You have black lines and text, but no white background. Consequently, the exported PNG is see-through apart from the black, and your viewer is obviously putting black in the see-trhough bits as well.
The simplest solution is to create a big white rectangle and put it underneath everything else.
-trent
Or you could set the Page Background to white with 1.00 alpha. That's in Dialogs -> Document Options (in 0.38) or in File -> Document Preferences (in 0.39).
I other words, just press Shift-Ctrl-D and raise alpha to 1.00.
Greetings.
Daniel Díaz yosoy@...72...
Thank you very much, both of you :) The background bit worked fine.. also figured out how to work with the DPI in the export dialog. Weee! This is shiny :)
Wonderful program.. expect more stupid questions from me soon as I continue to toy around with this :)
Daniel