I have order your Advanced User Tagging v3.2.3. On your website it seems to be compatible with VB 5.0.X but I can't install it on my VB 5.1.6. Is there a other version for it?
You have placed an order for the vB3/vB4 version of the AUT modification, which is not compatible with vB5 in any way, shape or form.
I'll change the licence to the vB5 version
Currently I don't believe our vB5 products are compatible with the latest version of vB 5.1. If you intend to run custom modifications on your vB5 forum, I recommend upgrading a test forum first to see if your mods are still functioning.