 
Dear All,

I am trying to run the
following function (a CRR=Competing Risks
Regressionmodel) and
receive the error in solve.default.  Can
anyone give me some insights into where the problem is? 
Thanks 


>
print(z<-crr(J3500,CD3500,cov))
Error in solve.default(v[[1]])
: 
  Lapack routine dgesv  : system is exactly singular


      
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