When I commented it out altogether I lost the cURL header but also the first 4 characters ":Pro" of the text, so the title started "duct" instead of "Product"

I think I could have overcome that, but mine host has suggested other alterations to the script and it seems to be OK now

Current script looks for a line break between cURL header and data, but in my case (using proxy) I seem to have two headers so I got the second header info reproduced. Change wxspace.php (around line 535 in Notepad++):
$i = strpos($data,"\r\n\r\n");
$headers = substr($data,0,$i);
$content = substr($data,$i+4);
to
$i = $cinfo['header_size'];
$headers = substr($data,0,$i);
$content = substr($data,$i);