• New/Enhanced settings will be highlighted in the control panel (drop-down menu at the top) as they aren't yet documented on our site. The t=### refers to the forum thread number.
• Uses the new Amazon authentication which requires an Amazon Access Key ID and Amazon Secret Access Key. You can plug those into the Amazon section. Register at
http://aws.amazon.com 
Because of a change in Amazon's API, all versions of Associate-O-Matic prior to v4.2.0 will stop working on August 15, 2009. You must upgrade your stores to v4.2.0 or newer in order to avoid interruption.
• Uses new IonCube encryption software which has a directory containing loaders for various OS versions.
• If you have problems with the IonCube encryption, they provide an installation helper script:
/ioncube/ioncube-loader-helper.php
• If you use mod_rewrite get the latest rules.
• As per Amazon's new Product Advertising API License Agreement, we have added the following required information...
- Disclaimer on store pages (defaults to bottom of pages, can be located elsewhere using a Custom Box)
- Date/Time next to pricing
- Details link with popup next to pricing
New Features
• SOAP support added for new Amazon ID requirement
• UTF-8 header always sent (don't need to rely on a special Apache directive)
• Amazon Time Offset - used when you see errors that your server time is before or after Amazon server time
• Improved error reporting
• Updated to latest Amazon API version: 2009-07-01
• Various other enhancements
Bugs Squashed (t = Forum Thread ID)
• Fixed various issues related to the new Amazon ID requirement (critical for the Amazon's August 15, 2009 deadline)
• Fixed cfg.sha256.php file for instances where the sha256 function is already installed with PHP
• Apostrophe in keyword caused new Amazon ID requirement to bomb
• Erroneous text in portion of cfg.css.php file
• Several other small fixes
ที่มา :
http://www.associate-o-matic.com/news.html#421 
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