Hello, Wayne.
You're right. That clearly rules out the "not compiled" as a possible cause. Could you please attach "C:\ProgramData\UltiDev\WebServer\UWS.Configuration.xml" from the problematic XP box for us to take a look. Also, if you can attach the project you have an issue with, or better, if you can create a new clean project with just a web service and reproduce the problem with it, we would greatly appreciate it.
As always, thank you much for helping us finding problems with our software and solutions to the problems.
Best regards,
UltiDev Team.
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