Is the v1.5.5 extras file, paypal_tlstest.php, backward compatible with v1.5.1? I've been working with our website host administrator regarding the upcoming changes with PayPal and would like to test the server with the file using v1.5.1 before upgrading to v1.5.5, as it appears the host will be ready before I'm finished upgrading to v1.5.5. I could find no documentation on this utility.
Thanks,
Dave
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