Strange... I tried it too (6.5.4) but it kept giving me an error that it needed 6.4.3. After I replaced it with 6.4.3 I got a step further :)
Going to test it some more.
No tried it again with replacing 6.4.3 in my "@Arma2NET\AddIns\Arma2NETMySQLPlugin" folder with 6.5.4 and it will give an error that it cant find 6.4.3.
Swapped it back and presto it works :)
(btw.. also thank YOU for your awesome coding :P)
No.. thank YOU. For this awesome piece of coding :) and your patience with answering questions on this forum !
I took some fiddling for my side. But it worked straight out of the box.