Sometimes the following error is displayed, if application uses the old version of CPAN SOAP module:
“Client Application failed during request deserialization: no element found at line 1, column 0, byte -1 at XML/Parser.pm”

The possilbe solution is to change SOAP::Transport::HTTP module (SOAP/Transport/HTTP.pm), function “handle”:

[cc lang=”perl”]
sysread( STDIN, $buffer, $length )
[/cc]

should be replaced by

[cc lang=”perl”]
read( STDIN, $buffer, $length )
[/cc]