Hi,
Pls new a project based on MC56F8014 with CodeWarrior for DSP56800E ver8.3, then complie/link and download it to flash of MC56F8014.
After above procedures are okay, Then drag the files in the old project to the new project, if you use PE, enable and configure the bean, then compile/link.
I suppose that the CodeWarrior version difference leads to your error, you can not open the old project in the latest version of CW tools.
Hope it can help you
BR
XiangJun Rong