What's wrong anyone?
Your Azul image is a .JPG which doesn't support alpha channels...
when you load an image Blitz converts it into the same color depth as your program is useing...this means a 8-bit paletted 256 color .BMP is converted into full 32-bit color when you use the Blitz loadimage function...and as BlitzPlus doesn't have support for alpha channels...it won't do anything with them.