The spellData.lua file is missing Cataclysm profession data scraped from wowhead, only being up-to-date with WOTLK. This leads to the add-on using an outdated database and newer recipes added in Cataclysm cannot have their skill-up chance calculated. In addition to this any older recipes which had their skill-up data altered in Cataclysm show the skill-up chance incorrectly as they are not up to date either. This should be fixed by scraping the data from Cataclysm wowhead and adding it to spellData.lua.