Im going to be re-building a site using zencart, but need the site to stay live with old design so there is no downtime.

I can see the basic zencart template after going through installation at ipaddress/~login/

However, when trying to access admin (ipaddress/~login/admin/)
I get a 404 page error and the address bar now shows:

"http://ipaddress/~login/admin/://ipaddress/~login/admin/login.php"

How can I work on site using ipaddress for testing?

I checked admin/configure.php and its showing ipaddress/~login/ as path.

Thanks for your help.