[totaltec]

Step 3
Now we need to update the database with the module settings and added language variables. To do this visit Tools > Patch/Upgrade section of your X-cart admin. Look under the heading "Apply SQL Patch".

In the text box labeled SQL query(ies) paste these queries:

INSERT INTO xcart_config VALUES ('enable_upselling','Upselling products','Show_Both','Add_to_cart_popup',10,'sele ctor','Show_Both','Show_Random:lbl_show_randomly_s elected_products\nShow:lbl_show_upselling_products \nShow_Both:lbl_show_upselling_and_random\nHide:lb l_do_not_show_upselling_products','');
INSERT INTO xcart_modules VALUES (98,'Add_to_cart_popup','This module allows your customers to see what they have added to cart along with upselling products.','Y');
INSERT INTO xcart_languages VALUES ('en','module_name_Add_to_cart_popup','Add To Cart Popup','Modules');
INSERT INTO xcart_languages VALUES ('en','lbl_show_upselling_and_random','Show upselling + random products','Labels');
INSERT INTO xcart_languages VALUES ('en','lbl_show_randomly_selected_products','Show random products','Labels');
INSERT INTO xcart_languages VALUES ('en','lbl_show_upselling_products','Show upselling products','Labels');
INSERT INTO xcart_languages VALUES ('en','lbl_do_not_show_upselling_products','Do not show additional products','Labels');
INSERT INTO xcart_languages VALUES ('en','lbl_item_added_to_cart','item added to cart','Labels');
INSERT INTO xcart_languages VALUES ('en','lbl_items_added_to_cart','items added to cart','Labels');
INSERT INTO xcart_languages VALUES ('en','lbl_proceed_to_checkout','Proceed to checkout','Labels');

Alternatively you can use phpMyAdmin for this task, or download the file attached to this post and upload it using the "Patch File" Upload button. (you may need to rename it to .sql instead of .txt, not sure haven't tried it yet)