License file does not support this version - Creo 8

[MF_10047237]

I subscribed school academic program for CREO 8 and I installed it starting from MED-100WIN-CD-450_8-0-0-0_Win64, even if the PDF procedure associated refered to CREO 7. I used the licences reported in the PDF and from the installation process it appeared as Active.
Anyway if I launch Creo 8, I receive The error  "(-21) License file does not support this version" and the application closes.
I have checked on https://www.ptc.com/en/support/creo-admin-troubleshooter/error-code/error-21 how to solve the error but when I click on PTC License Management tools link I receive "Request Processing Failed" on the web.
After the installation I received an email with a "sw_license_email_*******.dat" file. I tried to replace the original licence in C:\ProgramData\PTC\Licensing, but Creo doesn't recognize it as valid licence.

What should I do?

[VladimirN · Accepted solution]

Did you follow this instruction - "PTC Creo 8.0 - Schools Edition - Quick Installation Guide" (product code BE800908EDSTUDENTEDK12)? Link: https://apps.ptc.com/schools/references/install_creo8_schools_standard.pdf

[MF_10047237]

Ok now it works crrectly, 

thank you

[VladimirN]

You're welcome.