Copied style to floppy says it not their

Hi, can someone help please. I have copied a style to floppy disk from my old ketron x4. Connected the external floppy disk to my laptop. Opened up the floppy but when I right click on the style to send it to my removable usb stick it says, this is no longer located in A verify the location and try again.
regards andy[size=13pt][/size]