Cant generate sitemap...

I've tried a lot of different settings including removing the delay (wont let me null or totally remove it), tried removing features, changing the max urls... No luck

This a few lines from the errors:

Code:

Warning: fwrite(): supplied argument is not a valid stream resource in /home/roms/public_html/forum/vbseo_sitemap/vbseo_sitemap_functions.php on line 1176
 
Warning: fwrite(): supplied argument is not a valid stream resource in /home/roms/public_html/forum/vbseo_sitemap/vbseo_sitemap_functions.php on line 1192
 
Warning: fclose(): supplied argument is not a valid stream resource in /home/roms/public_html/forum/vbseo_sitemap/vbseo_sitemap_functions.php on line 1193
 
Fatal error: Allowed memory size of 15728640 bytes exhausted (tried to allocate 1572864 bytes) in /home/roms/public_html/forum/vbseo_sitemap/vbseo_sitemap_functions.php on line 1792

Thanks for any help...

-Roms

1st 3 errors: Please make sure your vbseo_sitemap/data/ folder is chmod 777

4th error: you're running out of memory. You need to either remove some sections from being included, or increase your php.ini memory_limit. We recommend 32M as a bare minimum, 64-128 for larger servers.