Hi Burpee,

The white lines problem may be caused by combining feathering and stained glass transparency. If you can avoid using the stained glass transparency type, you won't get the warning messages and you should be able to export PNGs without the white stripes. (I realise that might not be viable because stained glass is very useful but I'm just giving you the info.)

I don't understand why exporting as PSD would fix your problem but anything's possible.

Regarding the exceptions when exporting PSD: Please submit a bug report (a "ticket") to support.xara.com with a sample file if you can. Thanks.

Phil