Hi Michael
Sorry been so long but busy trying to finish off our latest project!
Just put Vintage Warmer 2.3.1 (latest version) into a project and no issues at all - I thought I would check my account to make sure I had the latest version and on Vintage Warmer 2 iLok version my account says
PC Win 32bit & 64bit
iLok
unknown error - please contact PSP support2.3.1
RTAS, VST"
So it looks like this is specific only to iLok version - could you not ask them to change yours to normal serial number authorisation??
Also it has just come to me - about 2 years ago I had an issue with an iLok Sonnox Oxford plug in - it would not load - I was told to load a legacy version of the iLok software (apparently Sonnox Oxford had not updated something their side) and all then worked OK - Just a thought, might be worth a try
Hope you get it sorted soon
Nigel