Ocean Script Error

 When I try loading my ocean script below:

ocnWaveformTool( 'wavescan )
simulator( 'spectre )
design(     "/home/aalsaafi/simulation/working17-7/spectre/schematic/netlist/netlist")
resultsDir( "/home/aalsaafi/simulation/working17-7/spectre/schematic" )
path( "/CMC/kits/IBM_PDK/cmrf8sf/relDM/Spectre/models" )
modelFile(
    '("/CMC/kits/IBM_PDK/cmrf8sf/V1.6.2.4DM/Spectre/models/allModels.scs" "")
)
analysis('tran ?stop "10u"  ?errpreset "moderate"  )
option(    'dochecklimit  "no"
)
saveOption( 'useprobes "yes" )
saveOption( 'currents "selected" )
temp( 27 )
out=outfile( "/home/aalsaafi/simulation/working17-7/myResults.txt" "w")
run()
results()
selectResult( 'tran )
outputs()
fprintf(out "%s\t%5.2f\t%10.2f\n" VT("(/Vout_tran")))
close(out)

 simulation goes fine till it reaches the following error:

*Error* fprint/sprint: format spec. incompatabile with data-nil

<<<Stack Trace>>>

fprintf(out "%s\t%5.2f\t%10.2f\n" VT("(/Vout_tran")))

 Has this error came across anyone?

 Thanks