I am trying to install Vendorzen on ZC v.1.3.7.

This is the SQL:

# VENDORZEN 1.2 --- compatible with Zen Cart v1.2
# TO INSTALL VENDORZEN, run the following SQL statement in your database.
# You may need to manually insert your "table prefix" in the ALTER TABLE command
# ie: ALTER TABLE zen_products
ALTER TABLE zen_products
ADD vendor1_name VARCHAR( 35 ) NOT NULL ,
ADD vendor1_price VARCHAR( 12 ) NOT NULL ,
ADD vendor1_sku VARCHAR( 25 ) NOT NULL ,
ADD vendor1_url VARCHAR( 25 ) NOT NULL ,
ADD vendor2_name VARCHAR( 35 ) NOT NULL ,
ADD vendor2_price VARCHAR( 12 ) NOT NULL ,
ADD vendor2_sku VARCHAR( 25 ) NOT NULL ,
ADD vendor2_url VARCHAR( 25 ) NOT NULL ,
ADD vendor3_name VARCHAR( 35 ) NOT NULL ,
ADD vendor3_price VARCHAR( 12 ) NOT NULL ,
ADD vendor3_sku VARCHAR( 25 ) NOT NULL ,
ADD vendor3_url VARCHAR( 25 ) NOT NULL ;


This is the error I am getting.

1146 Table 'prymlurg.zen_products' doesn't exist
in:
[ALTER TABLE prymlurg.zen_products ADD vendor1_name VARCHAR( 35 ) NOT NULL , ADD vendor1_price VARCHAR( 12 ) NOT NULL , ADD vendor1_sku VARCHAR( 25 ) NOT NULL , ADD vendor1_url VARCHAR( 25 ) NOT NULL , ADD vendor2_name VARCHAR( 35 ) NOT NULL , ADD vendor2_price VARCHAR( 12 ) NOT NULL , ADD vendor2_sku VARCHAR( 25 ) NOT NULL , ADD vendor2_url VARCHAR( 25 ) NOT NULL , ADD vendor3_name VARCHAR( 35 ) NOT NULL , ADD vendor3_price VARCHAR( 12 ) NOT NULL , ADD vendor3_sku VARCHAR( 25 ) NOT NULL , ADD vendor3_url VARCHAR( 25 ) NOT NULL ;]