PNGEncoder -> byteArray not working with PNGImage: Alpha not supported

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Take Screenshot from a DisplayObject with BitmapData (without 
transperency) draw
2. Use the PNGEncoder (org.alivepdf.encoding.PNGEncoder) to create a 
ByteArray from the BitmapData
3. Use addImageStream or PNGImage

Then an error is thrown "Alpha channel not supported."


It seems, that the ByteArray is not correct, which is coming from the 
PNGEncoder, so the PNGImage can not handle it correctly.


What version of the product are you using? On what operating system?
Mac OS X 10.6.2, Adobe AIR 1.5
AlivePDF 1.5 Beta, Build from 16. November 2009


Please provide any additional information below.
This Bug is new to this version I mean.
I changed to Version 1.4.9 and it's working fine.

Original issue reported on code.google.com by rotor...@dashart.de on 7 Jan 2010 at 12:19