Plesk control pannel installing Tocmcat deleted Apache configurations. How to restore?

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http://serverfault.com – I updated the Plesk control pannel from 7.1 to 10.3.1. It got updated successfully however after some days when i tried to install tomcat using Toos and Utils -> Updates -> install new software. But the installation failed also it crashes all the apcache configurations.. Then It asked Error: New files of configuration for Apache web server were not built due to errors in configuration templates. The detailed error message was e-mailed to you, so please check the e-mail, fix the errors, and click here to retry generating configuration. Then i clicked that link suggested sudden (HowTos)