Hi Alex,
Can you publish a link to Creo 6 download as well?
Thanks,
Lucas
Here it is: https://apps.ptc.com/schools/references/MED-100WIN-CD-430_6-0-6-0_Win64.zip
See https://community.ptc.com/t5/PTC-Education-Forum/Creo-4-0-5-0-and-6-0-download-links/td-p/773962 discussion.