I'm not sure if this will fix it or not but I think you need to specify an "on_action" property. This can either go in your use SOAP::Lite statement like:

use SOAP::Lite on_action => sub{join '', @_};
[download]

or I think you can also do it in your call like:

my $soap = SOAP::Lite->new(%options)->uri($uri)->proxy($server)->on_ac
+tion(sub{join ' ', @_});
[download]

You'll have to try it out and see whether you need to put the '/' on the end of the proxy address to get it to look right.

The perldoc for SOAP::Lite talks a bit about communicating with .Net (look at "To use SOAP::Lite client and .NET server") which I'm guessing is applicable to you.

HTH --b