Vtiger login page not showing

Question

everytime I try to access: localhost/vtiger, it only shows a blank page. I actually have another web app (openatrium) on /var/www/ which is completely working.

I've added an entry on sites-available, I tried (which seems to work on openatrium):

<Directory /var/www/vtiger>
AllowOverride All
</Directory>

I also have the same vtiger instance installed on separate CentOS VM LAMP, which is completely working. I've checked config.inc.php and everything seems correct, in fact I also deployed it in Windows through WAMP, which is also working well.

I'm trying it on Ubuntu/Apache2/PHP5.4, one difference I could think of is my CentOS VM is running PHP 5.3, as well as my WAMP.

I can't also seem to turn on allow_call_time_pass_reference on php.ini because its missing.

Any suggestions?

Answer 1

After countless hours of searching, this patch worked for me. Seems that it was a
PHP 5.4 issue

See Djante's comment