Starting 29 April 2011, the existing (2.60) version of Triangle extension will not be able to login to Business Catalyst servers due to a change in authentication protocols.
To allow you to continue using Triangle, Business Catalyst have released a new version (2.61) and made it available for download from here.
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important update for all triangle users
Rob Miles - Tuesday, May 10, 2011
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We love the new website. We really appreciated your attention to detail and all your help and support along the way. We will be sure to recommend you to others in our travels.
andrew lawson, best practice consulting