It looks like you have no value for $sql_tbl[product_options]. Make sure this is defined properly. They may have changed the name of the table in the newer version of x-cart, so just go into your config file or look at your xcart database and make sure you are usnig the correct key name in your $sql_tbl array to specify the product_options table.
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www.brettbrewer.com
Getting back into x-cart dev after a long hiatus. Modded lots of x-carts from version 3.1.x to 4.1.x. Developer of ImageScaler mod, Pre-login per user coupon mod, Wordpress feed mod, DigitalSubscriptions mod, Phonetic bulk download keys addon for DownloadExpander mod, Serial Number Generator for ESD products, Custom CMS/LMS integrations, external products mod, and more.
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