I upgraded Magento from my Magento 1.6 to 1.9 last night, and it's going error 500 Server Internal Error then my magento can't be opened.
so what i'm do is chance user permissions of
index.html on root folder to 644 and
index.html on downloader to the same permissions and delete all file n folder in Magento cache, but it can't chance anymore.
and i'm wanna to trying access the admin panel and cannot be shown and error likes this
SQLSTATE[42S22]: Column not found: 1054 Unknown column '
group' in 'where clause', query was: SELECT COUNT(*) FROM
group= '/wizard/') AND (
please help me to fix it out..