AH01071: Got error 'Primary script unknown\n' with CB2 & Apache 2.4.9

[Blueman]

I've got the same problem.
But I did find what is causing the problem.
In the .htaccess the last line contains this:

RewriteRule ^(.*)$ /index.php/$1 [L]

After I change this to the following line the error has gone away.

RewriteRule ^(.*)$ /index.php?page=$1 [L]

I don't know why this doesn't work anymore like this but maybe someone else does.

This solution work.

Thank you