Hi,
I ran into a very similar problem using SoapUI pro 4.5.2 official release (32-bit) on Windows 7.
The only difference is it does not seem to relate to any special characters at all.
1) Created a new project
2) import a WSDL
3) Create a testsuite
4) Create a testcase
5) Create a WSDLTestRequestStep
6) Set the project to composite
7) Save the project
Reopen the project
I get the same error as in the post above and some projects and all operation sample request in my project are double.
The main reason for using composite projects is because of project size which can swell up very fast to unusable proportions to the point that it goes out of memory.
Perhaps I can send you a copy of my project directly as cannot post it in a public forum.
