Cannot supress sub-asm in assembly

I have an assembly that contains a sub-asm that I cannotsupress for some reason. I do not get any kind of feed back statingthat there is a problem. Haven't seen this before, has anyone else?

The assembly is not very large and I have a couple configs in itand I have tried using the configure feature option but that doesnot work either.

thanksSolidworksAssemblies