Upgraded to 3.6.8 need some help

[dsmoke]

So I upgraded from 3.5.4 to 3.6.8

forum is up but a few problems maybe you guys could help me with

main reason for upgrading was spam, and the captcha does not work at all.

when i try a test reg it fails because i did not enter captcha yet it wont display captcha at all with drefault or my own template, it's set to GD which should work because the photopost i have is running fine

that's prob one

some people are complaining thaT quick reply no longer works

another prob is vbadvanced stopped working on the main page, and the default settings in admin for vbadvanced gives me a mysql error now

oh and vbplaza stopped working, anyone know if it can work with 3.69 and beyond?

and lastly some people are getting a white scren after they post

thanks in advance for your help i'm frustrated!