OK, sounds like you don't get that far with creating the netlist logic.
Open the design
From the menu, Window and take the OPJ entry for your design.
The Project Window has File and Hierarchy tabs, select the File tab.
Open the "+" if required for the DSN entry, this will list the Schmatic Folder(s) and Design Cache.
Open the "+" for the Design Cache.
In the Design Cache you will see the Symbol name and File location, the File Location will contain the \ic (logic)\ as part of the Path.
You will need to select the entry and use right-click>Replace Cache to replace the existing part with one from an acceptable library path - basically a path that does not contain illegal characters.