[PHP] ftp_fput() "limit is 10 characters

[mayo]

I'm trying to ftp a file. I looked in the php manual and I don't see a
character limit for ftp_fput().
I'm getting the following error
 
ftp_fput(): Specified object name too long, limit is 10 characters:
CF-20050520. in /home/www/cf/test.php on line 45
There was a problem while uploading CF-20050520.txt
 
thx
 
mayo