New hosting

[admin]

important is database
and secont is images (img folder)

and get all files for the script
then upload them to new server
then chage mysql login details from config.php
give write permition to below folders
img and all sub folders
config folder
tmp folder and its sub folders

and know that you dont have to copy all files in tmp folder and files in tmp folder's sub folders

just get create tmp folder and it's sub folders and give write permition for all folders (important**** get all files tmp/html folder)