My WiX (3.10.3.3007) project has 2 different web.config files from, and installed to, 2 different locations. The 2 errors from my build are:
Error ICE30: The target file \'svcen
The problem is that my Directory elements did not have a Name attribute. In the Directory table the DefaultDir was set to . for all of my directories. Thus the ICE was viewing them as the same directory.