I'm using InDesign CS5, sometimes my export setting gets stuck on CMYK mode as I was working on a different document previously and when exporting the PDF setting is saved.
No problem, I just go to Output and change it to RGB. Usually I choose either Working RGB or Document RGB, but I don't really know the difference. Can anyone help me to understand?
I had asked a similar question to this a few months ago, and @joojaa gave me this helpful answer:
They are all the same profile. The name of the profile is sRGB IEC61966-2.1. The other labels are just where they are set:
They are all the same profile though and result in same thing.
Hope this helps!