Please edit this to use <code>Some code</code> tags around your code. Then we will be able to read it without getting headaches. It does look like you have tried as I can see a <code> tag at the start of your post. But something is not right.

Update

I do suspect these two lines may be related to your trouble.

$wb[0] = ...;
$wb2   = ...;
[download]

I would also add use strict; use warnings; and follow the recomendations it spits out at you.

Cheers,
R.