VB 5.0 login via API - process_new_login not working after upgrade to VB 5.0

[veena]

We have integrated our plugin with VB 5.0. When a user registers to our site, we are able to automatically create a VB account for the user and add user to the right forum group etc.

But when a user logs in to our site, the auto-login (single-sign-on) to VB 5.0 is NOT working.
It used to work really well in VB 4.x.

We make a call to setcookie to set the 'userid' and 'password' and then call the VB API to autologin:

process_new_login('', false, '');

Looks like VB 5.0 has removed support for this API.

Need help with the single-login integration between our plugin (written in php) and VBulletin 5.0.
Has anyone here experienced a similar problem? Any solution for this?

Thanks,
Veena Prashanth