Missing Content Importer and Content Processor in XNA Game Studio 4.0 on XP

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开发者_StackOverflow 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.

On the off chance that "downloading the files individually" means you've downloaded the wrong thing, here is the stand-alone installer for XNA Game Studio 4.0, which will run on Windows XP.

(The Windows Phone Developer Tools, on the other hand, will only install on Vista and above.)

I was having problems with transparency in my PNGs as well. It may be the program you're using to create/convert the png files. I used irfanview and no longer have any problems.

I never found a solution to this whilst using XP. However now that I have upgraded to Windows 7 everything works as expected. I can only therefore assume that either there was something incorrect with my installations of the Net Framework, XNA Game Studio, or XP; or alternatively XNA Game Studio does not fully support XP.