Hello,
I have upgraded from 5.3.14 to 6.02 (full version install) and everything went good and seems to be working just not the clientarea.php page after login.
I have opened a support ticket over 48 hours ago with no reply or update.
I have tried to turn on php error in settings as well and the configuration.php file and no errors are shown. I checked the php.ini file and error_report is on. I have uploaded all files 2 times with no fix. Yes, I am using a custom theme and cart but when I change them to any default the problem is still in place so its not a theme or cart problem. I have also disabled add-ons to troubleshoot more and that has made no change.
Feel free to test for yourself: https://www.xtreme-hosting.com/billing/clientarea.php'>https://www.xtreme-hosting.com/billing/clientarea.php
user: demo@demo.com
pass: demo
After login you will get the white page, if you return back to our website: https://www.xtreme-hosting.com and look at the top bar you will see you are logged in and can access everything but the overview page as that is the clientarea.php page.
Thanks for everyone's help with this.