www.domain.com & domain.com diffrent ?
 

photopost config files say domain.com for the paths. when i try and visit www.domain.com and login to photopost it doesnt work, but if i got to domain.com and login to photopost it works fine. is there a way to make it work for both?

Yes you need to use in the cookie domain this

.domain.com then it will work for every subdomain.

i check that and its currently set to .domain.com and its still not working.

You need to replace .domain.com with your domain name. ;)