Got no idea what causes this: My sister sends a JPG attachment from her Mac (OS 10.6, not sure what else you'd need to know) to someone with Windows who uses AOL. The attachment comes up with an ASPX extension at the Windows end. Huh?
Then I try it on my aging PC (XP SP2). The attachment comes up fine when I view it with Safari, but it's just a red X in Explorer. Huh?!?
Does anyone know what causes this?