Thank you,
this did it. What you have to do is to change the first line of the startup file to match the HP procurve on which you want to load the startup config.
For example:
In my case if I want to TFTP upload a startup config file to a 2510G-24, then the first line of my file should be:
; J9279A Configuration Editor; Created on release #Y.11.08
In my case if I want to TFTP upload a startup config file to a 2650, then the first line of my file should be:
; J4899B Configuration Editor; Created on release #H.10.83