FOPEN函数的问题

$fp = fopen("data/network".$ncounter."/meta_info/".$all_meta_content['CONTENT'].".html","w");
这条语句为什么老是被报错
Warning: fopen(data/network1/meta_info/SC06368 .html) [function.fopen]: failed to open stream: Invalid argument in C:\xampp\htdocs\pwpsfinal\metabolites_page_generator.php on line 18我是想要创建sc06368.html这个文件。