I'm on the last stage of my install and I have to place the paths to both the data directory and uploads directory. when I place the paths there and hit "Complete Photopost Installation" I get this:
Unable to create/write to /web/members/Photopost/data! Check your data directory permissions.
Unable to create/write to /web/members/Photopost/data/500! Check your data directory permissions.
Unable to create/write to /web/members/Photopost/data/1! Check your data directory permissions.
Unable to create/write to /web/members/Photopost/data/2! Check your data directory permissions.
Unable to create/write to /web/members/Photopost/uploads! Check your uploads directory permissions.
Both of these directories have them wide open as far as permissions go, so I should be able to create/write into them.
When I am in the directory for Photopost and select properties of the data directory I see /web/memebers/Photopost/data with the permissions set to 777.
Have you verified the true path by looking at a phpinfo.php file?
create a file called phpinfo.php and inside make the contents this
<?phpinfo();?>
upload to your server and run. You will at the bottom see the full path to the file phpinfo.php so you should be able to see your true full server path then