I've downloaded and installed Visual C# 2010 Express and XNA Game Studio 4.0 on to my XP (32-bit) machine. I had to do this by downloading the files individually as the App Hub package wouldn't install when I tried that, something to do with the Windows Phone stuff.
Anyway, I'm having trouble with transparency on PNGs and I took the project in to work today, and found that by changing Content Importer and Processor (properties) transparency worked fine, this was on a Windows 7 machine.
However on my XP installation at home, the drop down menus for these two boxes are empty. I have tried complete uninstall and re-install but this didn't help. Is there anything else I can try?
I can run the code fine, just can't get transparency on my images.
I'm basically missing the drop-downs shown in the image on this page:
http://msdn.microsoft.com/en-us/library/bb199633(v=XNAGameStudio.40).aspx
Interesting Addition: If i set the importer and processor at work, save the project, and bring it home, the settings show up and work. So it appears i'm purely missing the link between the drop down menus and the available settings.