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Hi,

I'm confused about the error message below, please could someone explain 
it? 

If the builder was creating a one-node tree, surely a terminal would be 
ideal?  Why would using a terminal create a tree larger than requested?

Thanks

David

GPNodeBuilder:269

        state.output.warnOnce("A GPNodeBuilder has been requested at 
least once to generate a one-node tree with " +
                              "a return value type-compatable with a 
certain type; but there is no NON-TERMINAL which is type-compatable " +
                              "in this way.  As a result, the algorithm 
was forced to use a TERMINAL, making the tree larger than " +
                              "requested, and exposing more child slots 
to fill, which if not carefully considered, could " +
                              "recursively repeat this problem and 
eventually fill all memory.");