Vm Shared folder redirect loop

I am trying to integrate WordPress with Codeigniter. I have Codeigniter on a local VM. I am using a shared folder to store the site as I prefer to work with local Windows tools. The Codeigniter works fine in this configuration. Here is a little more detail about my install.
1. I have no .htacces files
2. The apache user is a member of the vboxsf group so has read and write access to all files in the shared folder.
3. The virtual box forwards port 8180 to port 80 on the vm.
When I try to access 127.0.0.1:8180/wp-admin/install.php all I get is a “redirect loop” error.