After I've updated manually to 1.6 version, I encounter this error, visible in debug mode:

Message: SQLSTATE[42S22]: Column not found: 1054 Unknown column 'isMobile' in 'where clause'
File: /home/xxx/public_html/xxx/ow_core/database.php
Line: 331
Trace: #0 /home/xxx/public_html/xxx/ow_core/database.php(331): PDOStatement->execute()
#1 /home/xxx/public_html/xxx/ow_core/database.php(432): OW_Database->execute('SELECT * FROM o...', Array)
#2 /home/xxx/public_html/xxx/ow_core/base_dao.php(89): OW_Database->queryForObjectList('SELECT * FROM o...', 'BOL_Document', Array, 0, Array)
#3 /home/xxx/public_html/xxx/ow_system_plugins/base/bol/document_dao.php(111): OW_BaseDao->findListByExample(Object(OW_Example))
#4 /home/xxx/public_html/xxx/ow_system_plugins/base/bol/navigation_service.php(117): BOL_DocumentDao->findAllStaticDocuments()
#5 /home/xxx/public_html/xxx/ow_core/application.php(173): BOL_NavigationService->findAllStaticDocuments()
#6 /home/xxx/public_html/xxx/index.php(43): OW_Application->init()
#7 {main}
Type: PDOException

I have replaced the real valuesfor website with xxx. Anybody knows what can cause this error?

Thank you for your time!