BigGDawg

But curiosity got the better of me and I looked into it more closely – not quite solved – but I got the system to work using the new encryption.
Got most of what i need here:

https://stackoverflow.com/questions/20211996/aes-cbc-pkcs5-encryption-algorithm-in-php

You just need to update the sagepay.php file -replacing the base64 Xor functions. I have successfully got it going out – but have not tested the returned messages.
Should work though and I hope it helps.
BigG

I also have this problem, Really great that you are fixing it – how will we know when you have an update ready?

By the way, in case anyone else is reading this – sage said that its just a case of changing the VPSprotocol value to 3.00 – its not – the encryption needs changing too. Feels like it will be better to wait rather than to hack like Zoee says.

Many thanks
BigG