Licensing issue with new Creo download

I tried downloading my new Creo 4.0 student version but this error message keeps popping up :

C:\ProgramData\PTC\Licensing\BE400407EDSTUDENTEDK12_license.dat:(-21) License file does not support this version 

but the license im using is from what i got when i downloaded it and i checked if any old licenses were interfering but I deleted them all