Configuration License page changes related to new Subscription system
Significant changes have been made to License management page in M2E Pro. If you navigate to System > Configuration > M2E Pro > License section, you will see 2 blocks where you can review the email associated to your License Key as well as related Domain and IP.
You can change the License Key to a new one by pressing a Change button or update its data by pressing a Refresh button.
In some cases, issues could arise if outdated settings were saved in cache overriding the updated ones. This problem is fixed and no related issues are observed in the current version.
Memory leak during saving of Simple with required Custom Options Product in Magento
Previously, a problem could occur when a Simple Magento Product Custom Options marked as required was saved. The problem was related to the memory leak caused by tracking of the changes.
This problem is fixed and no related issues are observed in the current M2E Pro version.
"Call to a member function addData() on a non-object" during synchronization process
In previous versions, under the particular circumstances the error "Call to a member function addData() on a non-object" can arose and be displayed in the Synchronization Logs. This problem is fixed and no related issues are observed in the version 6.4.1.
Custom Fix for Magento major bug which occurred while upgrading the Extension
The majority of Magento versions faced a specific issue. The issue occurred during M2E Pro upgrade and prevented some files from being properly upgraded. Which would lead to further errors in M2E Pro work.
M2E Pro team implemented the Custom Fix which is intended to prevent the issue.
Major issue which arose in case the Magento Cron is used for M2E Pro Synchronization executing
Starting from 2014, M2E Pro has been using its own Cron Service, which resolved the issues related to the specific manner of Magento Cron Synchronization initialization and execution.
In those cases, for example, when there are particular Firewall settings or restrictions for a .htaccess folder, M2E Pro Cron Service cannot work. As a result, Magento Cron can be used as an alternative.
In the new version, the issue related to several successive executions of M2E Pro Synchronization (in some cases, up to 20 and more times in a row) is solved. In general, work of the M2E Pro in connection with Magento Cron has been much improved.