It seems you have changed from RGB 8bit to RGB 32bit.
Beside the option for RGB when creating a file, there should be a dropdown for 8bit, 16bit and 32bit. 8bit is what you want and changing to 8bit will allow you to save as PNG.
If you need to change it for a file, go to the Image Menu, then the Mode submenu, and select 8 Bits/channel.
Beside the option for RGB when creating a file, there should be a dropdown for 8bit, 16bit and 32bit. 8bit is what you want and changing to 8bit will allow you to save as PNG.
If you need to change it for a file, go to the Image Menu, then the Mode submenu, and select 8 Bits/channel.
![[Image: jamzasigniture.jpg]](http://img162.imageshack.us/img162/1856/jamzasigniture.jpg)