[kh99]

Maybe the problem is where $uploadinfo[servidores] is set? For exmaple,, if it's like this:

if (something)
{
    ...
    $uploadinfo[servidores] = "servidores";
    ...
}

then if "something" is false it does not set $uploadinfo but leaves it at the previous value. So you would need to add:

if (something)
{
    ...
    $uploadinfo[servidores] = "servidores";
    ...
}
else
{
    $uploadinfo[servidores] = "";
}

This is a guess - I still don't understand.