Re:JACL Plus Pro 1.5.3 Stable breaks Joomla 1.5.3 5 Months ago
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I have also seen it break the component if you update your server and it updates the kernel and/or php. You will get the same error message and behavior from Joomla. Just reinstall the Zend Optimizer and it will work once again. I just ran into this problem this morning after a server update was run over the weekend.