Confirm purchase not working

[mooseman]

Hi when a customer clicks on confirm purchase or check out now, it loops back to the cart with no error message, all options confirmed and entered.

I checked access logs, error logs, turned debugging on and nothing...

Can anyone shed some light on this situation?

Running:
VirtueMart 3.0.16
Joomla! Version    Joomla! 3.4.8 Stable [ Ember ] 24-December-2015 19:30 GMT
Joomla! Platform Version    Joomla Platform 13.1.0 Stable [ Curiosity ] 24-Apr-2013 00:00 GMT
Database Version    5.5.47-0ubuntu0.14.04.1
Database Collation    utf8_general_ci
PHP Version    5.5.9-1ubuntu4.14
Web Server    Apache/2.4.7 (Ubuntu)
WebServer to PHP Interface    apache2handler

[ClaudioRomeo]

Try to clean both Joomla cache and browser cache.
Now does it work?

If not, check if the payment method or shipping method is unique: sometimes small errors deliver great troubles. Example: the first shipping method is set from 0 to 10 kg; the second from 10 to 20. If the weight is 10 kg, VM can mess up.
If you are still in trouble, are you using any other extension that could conflict with VM?

[GJC Web Design]

afaik VirtueMart 3.0.16  hasn't been tested with J3.4.8

it was released as a fix for the problems introduced by J3.5.1

[mooseman]

Thanks for the quick feedback.

Claudio, yes I cleared both joomla & browser cache. no worky

What's funny is that the checkout was working before I migrated the site to a new server. should I be chaecking any permissions somewhere?

[ClaudioRomeo]

the checkout was working before I migrated the site to a new server

This information is important.

The PHP version is the same?  Any PHP option differently set?

[mooseman]

I'm running ISPConfig.

In the Site specifications, my old site had PHP set to CGI, on the new site it was set to MOD-PHP.

I set the new site to PHP, and nothing changed.

everything works fine until I check checkout, at which point it just goes back to the same screen.