HELP! Error 324 when flashing roms

[computernerd4826]

Hi, i have a touch pro with sprint. i have been using energyrom, however it occasionally freezes at the screen that says "Touch Pro" and has the red numbers below it. i have found the only way to fix it is to re-flash the rom. it has worked fine 10 times, but this time 48% through the flash, it went blank and i was shown- ERROR 324 : Invalid Command -
The Update utility cannot be used for your PDA Phone. Please check your update utility.
i have tried to flash silence rom just to see if it was the rom, but it had the same result.
btw,
in the bootloader, it says upgrade ROM code error and occasionally flashes no image file

thanks for your help