To solve:
- open the file: com_virtuemart_1.1.7.j15.zip
- open admin_files.tar.gz
- open the file sql.virtuemart.php
- find and replace “TYPE = M yISAM” or “TYPE=MyISAM” width “ENGINE=MyISAM”
- find (around line 2328) (`notify_date` timestamp(14) NOT NULL) and replace “timestamp(14)” with “timestamp”
- repack all in right paths
- uninstall component "com_virtuemart ..."
- try to install again and enjoy