Whenever I go to upload a file, it goes to the next screen but the file is showed at 0 bytes, and when I go to the file that I uploaded, its blank. What could be wrong here?

I too was having this problem, but I tracked it down not to an installation problem, nor a fileman problem, but to a CGI.pm/file system problem. CGI.pm creates a temporary file for any file uploads sent to it, by default I think it searches for the existance of /usr/tmp, then /var/tmp then /tmp and picks the first it finds existing (in my case /var/tmp) and writes the file to /var/tmp. If there is not enough room in /var/tmp it does not error, it just creates a zero byte file and proceeds. Take a look at your system and see if you have enough tmp space. Should clear it up.