I have installed a prior version and got the same message, but just removed and uploaded the latest version and I get the following:

"Warning: fopen(/home/cdhodgdon/domains/c-its.us/public_html/site-gen/data/generator.conf) [function.fopen]: failed to open stream: Permission denied in /home/cdhodgdon/domains/c-its.us/public_html/site-gen/pages/class.utils.inc.php on line 102

Warning: fwrite() expects parameter 1 to be resource, boolean given in /home/cdhodgdon/domains/c-its.us/public_html/site-gen/pages/class.utils.inc.php on line 103

Warning: fclose() expects parameter 1 to be resource, boolean given in /home/cdhodgdon/domains/c-its.us/public_html/site-gen/pages/class.utils.inc.php on line 103"

and

"Warning: Unknown: open(/home/cdhodgdon/domains/c-its.us/public_html/site-gen/data//sess_64384a8e60415773445e767ac594057e, O_RDWR) failed: Permission denied (13) in Unknown on line 0

Warning: Unknown: Failed to write session data (files). Please verify that the current setting of session.save_path is correct (/home/cdhodgdon/domains/c-its.us/public_html/site-gen/data/) in Unknown on line 0"
Hello,

make sure that generator/data/ has 777 permissions, and all files inside of data/ folder have 666 permissions.