switch generation

[Mafi]

This code worked in dmd 2.052:

///////
ubyte[] getIncludedFileImpl(FS...)(string file) {
     switch(file) {
         foreach(F; FS) { //ct foreach
             //forever in love with you D
             case F: return cast(ubyte[]) import(F);
         }
         default: throw new Exception(format("A needed included file not 
found %s", file));
     }
     assert(0);
}
///////

It does not work anymore. I know about switch changes but the following 
doesn't work either:

///////
ubyte[] getIncludedFileImpl(FS...)(string file) {
     switch(file) {
         foreach(F; FS) { //ct foreach
             //forever in love with you D
             case F: return cast(ubyte[]) import(F);
             break; // <--- here
         }
         default: throw new Exception(format("A needed included file not 
found %s", file));
     }
     assert(0);
}
////////

How can I fix this code?

Mafi

PS: I know I can be done with some ugly string mixins but I want it to 
work somewhat like it worked before.