upgrading from 2.3.5 to 3.6.6, will there be any problem due to MySQL?

[esiaz]

Hi, i have recently upgraded vbulletin v2.3.5 to v3.6.6 in my test server, and would like to migrate it to my production server.

I have one question:

Test server is running on PHP 4.4.0, MySQL 4.1.21 nt
Production server is running on PHP 4.3.6, MySQL 4.0.18 nt

The upgrade runs perfectly in my test server. I would like to know if the upgrade will run smoothly in my production server? Due to some reasons i cannot downgrade my test server to the exact php/mysql versions as production server and my production server cant be upgraded to 4.1.21 nt as there are some errors.

Thanks!

[Onimua]

vBulletin 3.6.6 requires, at minimum, PHP 4.3.3/MySQL 4.0.16.

If you have that or above, it should work. If you don't, then there probably could be some problems.