We’ve been working on this Vanilla forum upgrade from v1.1.2 to v 1.1.8  for a certain client since yesterday.  After successfully running Vanilla 1.1.8, we got three issues

• Password hash is now different thus users can’t login anymore using their old password.
• Problem in signing out. Maybe because of the customized theme that we use.
• SEO friendly links to the forum (since it is embedded in a custom website) doesn’t work anymore. I’m still trying to figure out 

I really need help to make it work seamlessly.  I almost spent the whole day working on this simple upgrade.