Can you share the syntax that you used for the pp utility?

The reason for asking is sometimes the pp utility doesn't properly detect and include needed modules. I've gotten in the habit using the -c and -x options when using pp, which causes it to "determine additional run-time dependencies".

The first messages are warnings, as the execution does not die. But later on SOAP issues an error and stops the program execution. I believe it's due to the first warnings.

If you can share those error messages, that might help others to be able to provide better assistance.

Since I don't have any experience with SOAP in general (much less SOAP modules), I probably can't offer any further suggestions.

I haven't tried it yet, but salva has a fairly new module called Win32::Packer that you could try instead of pp.