You can drag the out point of the still to the end of the comp, or you can dig into preferences and tell AE to make all still the duration of the comp. Take your pick.
Dave, thank you for your reply. This is the problem. When I select to still image in the timeline, it does not allow me to adjust/drag the out any further then 6 seconds and 17 frames. I also went into preferences and it is selected to make still images the length of the compisition. The current length of my compisition is 2 minutes 40 seconds and 20 frames.
Note: in the timeline it allows me to adject the out from 29 frames to 6 second 17 frames, but not further. Strange
Thanks for all your help.
Ok, I figured this out. The document was a psd (Photoshop Document with layer). Down on the timeline the image icon was showing the icon showing mulitple layers/images. I guess it was treating this as an image sequence or something. I went into Photoshop and saved it as a png format and everything now works as expected.
Thanks all for making me think.