The problem is in the second line:

$_e_if = s|(\/|\"|\,)||g; # Get rid of the / and/or " and/or ,
[download]

You are using | for the delimiter, and have a | in the regex. Either use a different delimiter, or better yet, use tr///d to remove single characters from a string. IE:

$_e_if =~ tr{/",}{}d;
[download]

Note: You are also missing a ~ in the s/// lines. = should be =~.