prefuse

i am fairly new to max/msp and with a few of my patches this error message 'can't open, bad header' is displayed in the max window when i attempt to open them. looking at previous topics i can see this has been covered before but either i don't understand the solutions being put forward or this is a current problem that no one knows how to solve?

if anyone could help it would be much appreciated as this is a rather worrying issue for me!

'can't open, bad header' is anyone able to help?