Chris,
As Joy responded above, our sales team will send you the installer links for MyEclipse 8.6 if you write in to them.
In the meanwhile, we need to make sure MyEclipse 9 works; if the issue you are facing is this serious, I would like to ensure that we get it addressed ASAP.
1) Could you tell me which validators you are having issues with?
2) By “validators crash” what do you mean – do you see errors in the error log or something else?
3) What method are you using to prevent the validators from validating resources?
Apologies for the inconvenience caused.