Unclear why, ends with a 404. With debug on and error message maximum, the following message shows:
Component not founds
Call stack
# Function Location
1 JApplicationCms->execute() /home/xyz/domains/xyz/public_html/index.php:40
2 JApplicationSite->doExecute() /home/xyz/domains/xyz.com/public_html/libraries/cms/application/cms.php:251
3 JApplicationSite->dispatch() /home/xyz/domains/xyz.com/public_html/libraries/cms/application/site.php:237
4 JComponentHelper::renderComponent() /home/xyz/domains/xyz.com/public_html/libraries/cms/application/site.php:191
Error log on server:
[Sat Jan 31 11:02:07 2015] [warn] [client] mod_fcgid: read data timeout in 40 seconds, referer: http://xyz.com/administrator/index.php?option=com_installer
[Sat Jan 31 11:02:07 2015] [error] [client] Premature end of script headers: index.php, referer: http://xyz.com/administrator/index.php?option=com_installer
I did a FTP copy, I only don't know if it needs a database upgrade as well?
The AIO fails as well!
http://bit.ly/1bCBBcv
all points to a timeout issue on your mod_fcgid - consult your host