processor is not adequate for running tools for cc121 yamaha

I hope someone can help with this. I have used my cc121 on many pc’s .
I now have an HP Pavilion with Intel(R) Core™i5-4200 CPU @ 2.50GHz 2.50 GHZ Windows 8.1 (latest udates installed) Cubase 5 (latest udates installed) I have tried installing different versions of the ‘Tools For CC121’ but i get the same message every time. “The processor is not adequate for running tools for cc121” I am now at a complete loss and desperate to get this working again. Any advice would be welcome.