Can i use a memory stick greater than 2GB on this camera?

the memory stick probably got corrupted and needs to be reformatted

check for new drivers @ sony or online

Did you formatted memory stick in camera?
Insert memory stick in camera and Format it by going into setup menu, you will see Format option and this will solve the issue.
If problem still not solved and camera gives memory stick error then try another memory stick in camera, you can use up to 2GB memory stick in this camera.
Thanks.

your camera is only available for use with a regular memory stick . it's not compatible with pro memory sticks (or ms greater than 256mb). so even if you you a memory stick adaptor with a 2gb ms, it will not work with cam. you'll need regular ms with has a maximum capacity of up to 128mb only.although those ms are no longer available from sony,you can do an internet search (like google) to check availability of the ms from online dealers.you can type in the ms models: msh128 or mshm128a.(that's a duo size ms w/included adaptor).you'll be suprise to find out it's still available online.hope this helps.tnx:)

Problem for Sony Memory Stick PRO Duo (2GB) for PSP I have a Memory Stick Pro Duo 2GB will not open on pc &also not formated

it has a lock key on side try to pull it

If it is Sony DSC-T200 camera then use maximum 2GB memory stick as it can not handle 4GB memory.

i have a solution that worked! Notice: save all the needed data on your computer, because Formatting your Memory stick will wipe everything out!
if you have a Sony PSP, or know someone who does, replace the memory stick that says "no memory Space" in to the PSP port, go to "Settings" which is the left-most section of the PSP main screen, then scroll down to "System Settings," select it, Scroll down again to the "Format Memory Stick" selection and press "X" follow on-screen instructions and  SHAZAM!  its ready for action in your camera again! 
-Indy

DSC-W80 sybershot camera has facility when you insert Memory Stick in its slot, it automaticaly selects this memory card and starts saving data on it and internal memory got suspended.
Pls check memory stick 2GB and inert it correctly in memory slot in camera.

The memory card can't be more then 2gb...the camera won't support more than that. Have you formatted the memory with the camera? If not try that, don't format the card with your computer.