I am new to Mathematica, and am using it primarily for the optimization features it has in relation to SystemModeler. I am unable to use this link between SystemModeler and Mathematica right now because the call Needs["WSMLink`"]; is producing the following error:

Block::lvsym: Local variable specification {Function[x,False]} contains Function[x,False], which is not a symbol or an assignment to a symbol. >>

StringJoin::string: String expected at position 2 in Options[WSMLinkPrivateSystemModeler]="<>Block[{Function[x,False]},<<1>>]. \!(*ButtonBox[\">>\", Appearance->{Automatic, None}, BaseStyle->\"Link\", ButtonData:>\"paclet:ref/StringJoin\", ButtonNote->\"StringJoin::string\"])"

WSMLink`WSMLink::wdir: Configuration file /Users/-----/Library/Mathematica/Applications/WSMLink/Config.m does not contain location of SystemModeler program directory.

how do I fix this?