Originally Posted by rigs
This was the magic key for me, just added that line to the .htaccess file... and it works!
None of the other proposals works for me.
I have tried to reproduce the error to verify the solution. I had to create a new database entry for bfa_ata4 as well. This is the complete procedure for me:
1. Back up the 3.5.3 settings with Export & Download Atahualpa Settings File
(if you want to keep them)
2. Activate 3.6.1
3. Push the button Delete 'bfa_ata4'
to create a new database entry
4. Add php_value suhosin.executor.include.whitelist bfa://
to the .htaccess file
5. Upload & Import
the previously saved settings (if you want to continue with them)