Help!!!

[thepurplecow]

Hi,

I was wondering if anyone is able to help...

My site, www.squaresandpixels.com, has suddenly gone wrong!
Whenever a user attempts to purchase pixels, the following erro message appears:

Warning: imagepng(): Unable to open 'grids/grid_1_small.png' for writing in
/home/squares/public_html/incs/functions.php on line 28

Warning: Cannot modify header information - headers already sent by (output
started at /home/squares/public_html/incs/functions.php:28) in
/home/squares/public_html/get.php on line 22


Also, whenver a user attempts to get free pixels, the normal page appears but the following error messages appear at the top of the page:

Warning: imagepng(): Unable to open 'grids/grid_2.png' for writing in /home/squares/public_html/incs/functions.php on line 28

Warning: imagepng(): Unable to open 'grids/grid_2_small.png' for writing in /home/squares/public_html/incs/functions.php on line 28

Warning: fopen(grids/area_2.htm): failed to open stream: Permission denied in /home/squares/public_html/incs/functions.php on line 28

Warning: fwrite(): supplied argument is not a valid stream resource in /home/squares/public_html/incs/functions.php on line 28

Warning: fwrite(): supplied argument is not a valid stream resource in /home/squares/public_html/incs/functions.php on line 28

Warning: fwrite(): supplied argument is not a valid stream resource in /home/squares/public_html/incs/functions.php on line 28

Warning: fclose(): supplied argument is not a valid stream resource in /home/squares/public_html/incs/functions.php on line 28

Warning: imagepng(): Unable to open 'grids/pregrid_2.png' for writing in /home/squares/public_html/incs/functions.php on line 28

Warning: Cannot modify header information - headers already sent by (output started at /home/squares/public_html/incs/functions.php:28) in /home/squares/public_html/header.php on line 142

Warning: Cannot modify header information - headers already sent by (output started at /home/squares/public_html/incs/functions.php:28) in /home/squares/public_html/header.php on line 143

Warning: Cannot modify header information - headers already sent by (output started at /home/squares/public_html/incs/functions.php:28) in /home/squares/public_html/header.php on line 144

Warning: Cannot modify header information - headers already sent by (output started at /home/squares/public_html/incs/functions.php:28) in /home/squares/public_html/header.php on line 145

Warning: Cannot modify header information - headers already sent by (output started at /home/squares/public_html/incs/functions.php:28) in /home/squares/public_html/header.php on line 146


I'm baffled and have no idea of what the problem is caused by - is there anyone here who can enlighten me??

 

[monaco]

Looks like the directory permissions got messed up. Contact your hosting providor if you don't have shell access, if you do...try this:

chmod -R 755 ~/public_html
chmod -R o+w ~/public_html/grids

The "headers already sent" is because of the write permissions errors being sent, and per HTTP spec, headers must be sent first.