To DO Before Using Magento Extension

Start point is config.xml file, for example /app/code/local/Companyname/Extensionname/etc/config.xml file. Then next step will be analyzing files. There will be 3 aspect of checking it. REWRITES Check model/class/controller. EVENT observes CRON job Rewrites => you should at least take a look into every defined model/class/controller rewrite within your config.xml file. however ...

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