Error Code 259 On A Mp240 ..prints Good But Will Not Scan

The left pane lists thecontents of your computers registry, in there double click on  HKEY_CURRENT_USER, it will expand to show the contents of that branch. Proceed to double click on Software, and then on Canon, and then on MP Navigator Ex, and then on 1.0(your number could be different), and then on 000085C5E19F and finally select Folders.

The right side pane will now display the contents of the Folders, in there select ScanTempFolder. Right click on it, select Modify, Enter something like C:\ and hit OK, now restart your computer and try it again.

Hope this works :-)

If you want the fun part, the program is set to save files to temporary location and it's throwing up the error because it has problems accessing it, setting this to C:\ or any other permanant location fixes this issue

Cheers