My version is still coming up as 1.0.0-1853. I've completely cleared CHDK from the card and replaced the binaries.
So you're running an old version...either you've downloaded an old package or not all of the files are replaced with the new ones, e.g. on a card with multi partiton layout...
-> download the full package from
http://chdk.wikia.com/wiki/Downloads-> unzip all files & folders to the card's root using a card reader
-> on a multi partition setup copy the files
to both partitions, also to the 1st / start partition !
-> read more about the USB remote feature in this wikia article:
http://chdk.wikia.com/wiki/USB_Remote