any1 knows why this problem occurs after i install a mew theme?
Basically you need to check following -
Go to app/design/frontend/default/Your_theme/layout/page.xml
change the line
<block type="core/profiler" output="toHtml"/>
<block type="core/profiler" output="toHtml" name="core_profiler"/>
This will solve the issue.
i tried .. but it doesnt help:(..
i think the problem is at httpdocs\app\code\core\Mage\Core\Model\Layout.php on line 555 ---Call to a member function toHtml()
but i duno how to solve it
Magento probably wants to display a block that does not exist.
It may be something wrong in the layout files of your new theme.
To get an idea of what it might be put in the method Mage_Core_Model_Layout::getOutput() a debug line.
echo $callack.'::'.$callback."<br />";
$out .= $this->getBlock($callback)->$callback();
Then try again and you should see a list of blocks that should be rendered.
The last one in the list is the guilty one.
By its name you should get an idea about where you should look.
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