Hi,
Ok, no problem.
Well, possibly the tools you mentioned, esecially the online ones may have acces to the imported XSDs.
I think you can attach files like this to forum posts. I have personally never tried, but have noticed other people attaching files. Please feel free to send the file.
Don't worry, I don't work for SoapUI, and even if I did I am sure I wouldn't have any problem accepting the possibility that it could be a SoapUI bug :-) - Its just that in this case I was hopefull it might be a separate issue, like the proxy etc. Also the SOAP/WSDL code is relatively old I think and I have been able to test complex WSDLs in the past. Could still be a new bug though...
If you send your WSDL I will have a go importing it and see if I can suggest anyting further, apart from SoapUI proxy setting etc.
Cheers,
Rupert