Just tried to patch to 1.9 and now i just have a white page

This is the second time this has happened to me.

I tried to patch to 1.9 and now I just have a white page. There is nothing whatsoever being output.

Can anyone help?

Just done a reinstall which seemed to work but when I then login I get the blank white page again.

Please help

in the previous version did you make any memory modifications to the congig.ini file? Maybe the upgrade has changed those modifications back to a lower default?

Check your server error logs for any error that is happening but apparently is not displayed on the screen ?