Thanks gordontaylor, already checked, all Tax Class button already select to None before this. But this problem still not resolved

COPIED FROM THE ERROR LOG

2014-02-01 18:11:30 - database error:  AbanteCart core v.1.1.8 Error: Unknown column 'tr.description' in 'field list'<br />Error No: 1054<br />SELECT tr.tax_class_id,
                     tr.rate AS rate, tr.rate_prefix AS rate_prefix,
                     tr.threshold_condition AS threshold_condition, tr.threshold AS threshold,
                     CASE WHEN tr.description='' THEN tc.title ELSE tr.description END as description,
                     tr.priority
               FROM ab_tax_rates tr
               LEFT JOIN ab_tax_classes tc ON tc.tax_class_id = tr.tax_class_ida
               WHERE (tr.zone_id = '0' OR tr.zone_id = '0')
                  AND tr.location_id in (SELECT z2l.location_id
                                    FROM ab_zones_to_locations z2l, ab_locations l
                                    WHERE z2l.location_id = l.location_id and z2l.zone_id = '0')
               ORDER BY tr.priority ASC in <b>/home/halimas1/public_html/core/database/mysql.php</b> on line <b>86</b>

Hi, can anyone help me regarding this? Already check error log but don't know what to do 

TIA

When I upload several pictures for one product, how can I select 1 picture that I want, to be the main view for the product?
Because it randomly select the picture that I don't want to be the main view.

TIA

I've already wait for five days for any solution.
Can't figure out why that picture will appear when open website using mobile phone or tablet.

Hi,
I've encounter 2 problems about main page banner.

1) What is the accurate pixels for picture to be use for graphic banner?
And how to make it fit nicely at the main page banner. I've tried several times but it alligned to top.

2) When I open my website using mobile phone or tablet, the main page banner shows the picture as I attached below. Which I never use in my web. When I use laptop or desktop, that picture didn't appear. Only graphic or text banner that I've set will appear accordingly. How to fix this?

Hi,

I also having the same problem. I only installed bank transfer extension but the payment method is not there. And the error: Payment Method Required! will come out.

The file is already named as .htaccess and I cannot find any .htaccess.txt file. But the size of .htaccess is 0 bytes.
I also don't understand what I have to do with the file link that you've given. Assist me please.