Recent editions of OTF don't include a line in includes/classes/shopping_cart.php that was present in earlier versions of OTF. The absence of this line makes it impossible for customers to delete items from their cart if one of the OTF text fields is populated by a value that includes either an apostrophe or quote marks. I haven't checked all versions, but I know this fix applies to 2.02, 2.01, and several of the manual installs.

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