Magento Sql安装不运行但读取xml

I got this config.xml

<config>
<modules>
    <lemike_devmode>
        <version>0.1.0</version>
    </lemike_devmode>
</modules>

<global>
    ...
    <resources>
        <lemike_devmode_setup>
            <setup>
                <module>LeMike_DevMode</module>
                <class>LeMike_DevMode_Model_Resource_Setup</class>
            </setup>
        </lemike_devmode_setup>
    </resources>
</global>
...

Which is accessed because when I change to something different then an error is thrown. So I made this Model:

class LeMike_DevMode_Model_Resource_Setup extends Mage_Core_Model_Resource_Setup {}

And the error is gone. Just the mysql4-install-0.1.0.php script and we're done:

<?php
die('hard!');

But after flushing my cache (via Magicento, Magento and Filesystem) and ensuring that the module is NOT in the core_resource table, it still doesn't work.

Why is my mysql4-install-0.1.0.php not running?

Names used in the <modules> node are case-sensitive. This should do it:

:
<modules>
    <LeMike_DevMode>
        <version>0.1.0</version>
    </LeMike_DevMode>
</modules>
:

Make sure you've places the install script inside the folder app/code/local/LeMike/DevMode/sql/lemike_devmode_setup/.
You can also try to clear the cache manually. Remove the contents of folder var/cache.
Off topic (a bit):
You can name your install script install-0.1.0.php. Starting version 1.6 there is no need for the mysql4 prefix.