Magento Patch Application causes Magento crash

[amaglonso]

I've applied these patches consecutively to Magento using CygWin:

PATCH_SUPEE-1533_EE_1.13.x_v1-2015-02-10-08-18-32.sh

PATCH_SUPEE-3941_EE_1.14.0.1_v1-2015-02-10-08-32-02.sh

PATCH_SUPEE-4291_EE_1.14.0.1_v1-2015-02-10-08-24-59.sh

PATCH_SUPEE-4829_EE_1.14.1.0_v1-2015-02-10-07-57-21.sh

PATCH_SUPEE-5344_CE_1.8.0.0_v1-2015-02-10-08-10-38.sh

After doing so, I try to clear my system cache as the instructions say but I can't access my front and back ends. I get a blank page.

I enable the error_reporting on index.php and I see this error:

Fatal error: Class 'Varien_Db_Adapter_Pdo_Mysql' not found in C:\xampp\htdocs\magento\lib\Magento\Db\Adapter\Pdo\Mysql.php on line 35

How do I fix?

[richardsuen · Accepted solution]

The permissionos has been modified after patches using CygWin,
please try reset the pemission of "magetnopath/lib/Varien/Db/Adapter/Pdo/Mysql.php" 

In my case, it is works now.