If you tell us what plugin we might be able to tell you.
he finally got it tow work, he already had the .ZIP files and extracted them into the plugins folder and everything is working now, still no button but I am going to fiddle around with SU16 and see if the updated extensions will work thanks for your help.
Official links to the Pro 8 editions are here …
If you need Free editions, change the “P” to a “F” in the exe/dmg filenames in the URL links.