Could the note at line 17 direct you to your problem?
Could not find MIME::Parser - is MIME::Tools installed?

I know zip about S::S::E and acknowledge that success-by-downgrading could argue against the missing M::P as a root of the problem, but it might be worthwhile chasing down the call, anyway.

In reply to Re^5: SOAP::Serializer::envelope: Client Application failed during request deserialization by ww
in thread SOAP::Serializer::envelope: Client Application failed during request deserialization by david2008

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