Failing that, you must change those settings manually using your favorite SQL browser/editor.
Connect to your database, browse to and open cms_config_custom.
Modify the following setting:
server:domain - site.com
server:path - /folder/
cookie:domain - site.com
cookie:path - /folder/
Clear your website "cache" folder.
Changing a Sub-directory to a Sub-domain
admin.php?op=settings
Site Domain: sub.site.com
Site Path: /
admin.php?op=settings&s=2
Cookie domain: sub.site.com
Cookie Path: /
Admin cookie name
Member cookie name
Failing that, change it in phpmyadmin, table cms_config_custom
server:domain - sub.site.com
server:path - /
cookie:domain - sub.site.com
cookie:path - /
Clear your website "cache" folder.
Changing Servers/Hosts
1. Make a copy of all your files in there current structure.
2. Make a copy of you database.
3. Upload you files to the new hosting server. make sure to keep everything in the correct file structure.
4. Create your new database and import the copy of your database you made a copy of in step 2.