Hi Olivier,

Thanks for the detailed reply. I have tried the steps according to your suggestions, but still I am getting error message :

INFO: Update the dependent parameter of the param_card.dat 
Generating 10000 events with run name run_01
survey  run_01 
INFO: compile directory 
compile Source Directory
Using random number seed offset = 21
INFO: Running Survey 
Creating Jobs
Working on SubProcesses
INFO: Compiling for process 1/1. 
INFO:     P1_ll_vlvl  
Error detected in "generate_events run_01"
write debug file /Users/chayan/Applications/software/MG5_aMC_v3_5_0/try/run_01_tag_1_debug.log 
If you need help with this issue please contact us on https://answers.launchpad.net/mg5amcnlo
str : A compilation Error occurs when trying to compile /Users/chayan/Applications/software/MG5_aMC_v3_5_0/try/SubProcesses/P1_ll_vlvl.
	The compilation fails with the following output message:
	    x86_64-apple-darwin13.4.0-gfortran: warning: could not understand version 13.04.00
	    /opt/anaconda3/bin/x86_64-apple-darwin13.4.0-gfortran -march=core2 -mtune=haswell -ftree-vectorize -fPIC -fstack-protector -O2 -pipe -isystem /opt/anaconda3/include -O -ffixed-line-length-132 -w -c driver.f -I../../Source/ -I../../Source/PDF/gammaUPC
	    /opt/anaconda3/bin/x86_64-apple-darwin13.4.0-gfortran -march=core2 -mtune=haswell -ftree-vectorize -fPIC -fstack-protector -O2 -pipe -isystem /opt/anaconda3/include -O -ffixed-line-length-132 -w -c myamp.f -I../../Source/ -I../../Source/PDF/gammaUPC
	    /opt/anaconda3/bin/x86_64-apple-darwin13.4.0-gfortran -march=core2 -mtune=haswell -ftree-vectorize -fPIC -fstack-protector -O2 -pipe -isystem /opt/anaconda3/include -O -ffixed-line-length-132 -w -c genps.f -I../../Source/ -I../../Source/PDF/gammaUPC
	    /opt/anaconda3/bin/x86_64-apple-darwin13.4.0-gfortran -march=core2 -mtune=haswell -ftree-vectorize -fPIC -fstack-protector -O2 -pipe -isystem /opt/anaconda3/include -O -ffixed-line-length-132 -w -c unwgt.f -I../../Source/ -I../../Source/PDF/gammaUPC
	    x86_64-apple-darwin13.4.0-gfortran: warning: could not understand version 13.04.00
	    x86_64-apple-darwin13.4.0-gfortran: warning: could not understand version 13.04.00
	    x86_64-apple-darwin13.4.0-gfortran: warning: could not understand version 13.04.00
	    x86_64-apple-darwin13.4.0-gfortran: warning: could not understand version 13.04.00
	    /opt/anaconda3/bin/x86_64-apple-darwin13.4.0-gfortran -march=core2 -mtune=haswell -ftree-vectorize -fPIC -fstack-protector -O2 -pipe -isystem /opt/anaconda3/include -O -ffixed-line-length-132 -w -c setcuts.f -I../../Source/ -I../../Source/PDF/gammaUPC
	    x86_64-apple-darwin13.4.0-gfortran: warning: could not understand version 13.04.00
	    /opt/anaconda3/bin/x86_64-apple-darwin13.4.0-gfortran -march=core2 -mtune=haswell -ftree-vectorize -fPIC -fstack-protector -O2 -pipe -isystem /opt/anaconda3/include -O -ffixed-line-length-132 -w -c get_color.f -I../../Source/ -I../../Source/PDF/gammaUPC
	    x86_64-apple-darwin13.4.0-gfortran: warning: could not understand version 13.04.00
	    /opt/anaconda3/bin/x86_64-apple-darwin13.4.0-gfortran -march=core2 -mtune=haswell -ftree-vectorize -fPIC -fstack-protector -O2 -pipe -isystem /opt/anaconda3/include -O -ffixed-line-length-132 -w -c cuts.f -I../../Source/ -I../../Source/PDF/gammaUPC
	    x86_64-apple-darwin13.4.0-gfortran: warning: could not understand version 13.04.00
	    /opt/anaconda3/bin/x86_64-apple-darwin13.4.0-gfortran -march=core2 -mtune=haswell -ftree-vectorize -fPIC -fstack-protector -O2 -pipe -isystem /opt/anaconda3/include -O -ffixed-line-length-132 -w -c cluster.f -I../../Source/ -I../../Source/PDF/gammaUPC
	    x86_64-apple-darwin13.4.0-gfortran: warning: could not understand version 13.04.00
	    /opt/anaconda3/bin/x86_64-apple-darwin13.4.0-gfortran -march=core2 -mtune=haswell -ftree-vectorize -fPIC -fstack-protector -O2 -pipe -isystem /opt/anaconda3/include -O -ffixed-line-length-132 -w -c reweight.f -I../../Source/ -I../../Source/PDF/gammaUPC
	    x86_64-apple-darwin13.4.0-gfortran: warning: could not understand version 13.04.00
	    /opt/anaconda3/bin/x86_64-apple-darwin13.4.0-gfortran -march=core2 -mtune=haswell -ftree-vectorize -fPIC -fstack-protector -O2 -pipe -isystem /opt/anaconda3/include -O -ffixed-line-length-132 -w -c initcluster.f -I../../Source/ -I../../Source/PDF/gammaUPC
	    x86_64-apple-darwin13.4.0-gfortran: warning: could not understand version 13.04.00
	    /opt/anaconda3/bin/x86_64-apple-darwin13.4.0-gfortran -march=core2 -mtune=haswell -ftree-vectorize -fPIC -fstack-protector -O2 -pipe -isystem /opt/anaconda3/include -O -ffixed-line-length-132 -w -c addmothers.f -I../../Source/ -I../../Source/PDF/gammaUPC
	    x86_64-apple-darwin13.4.0-gfortran: warning: could not understand version 13.04.00
	    /opt/anaconda3/bin/x86_64-apple-darwin13.4.0-gfortran -march=core2 -mtune=haswell -ftree-vectorize -fPIC -fstack-protector -O2 -pipe -isystem /opt/anaconda3/include -O -ffixed-line-length-132 -w -c setscales.f -I../../Source/ -I../../Source/PDF/gammaUPC
	    x86_64-apple-darwin13.4.0-gfortran: warning: could not understand version 13.04.00
	    /opt/anaconda3/bin/x86_64-apple-darwin13.4.0-gfortran -march=core2 -mtune=haswell -ftree-vectorize -fPIC -fstack-protector -O2 -pipe -isystem /opt/anaconda3/include -O -ffixed-line-length-132 -w -c idenparts.f -I../../Source/ -I../../Source/PDF/gammaUPC
	    x86_64-apple-darwin13.4.0-gfortran: warning: could not understand version 13.04.00
	    /opt/anaconda3/bin/x86_64-apple-darwin13.4.0-gfortran -march=core2 -mtune=haswell -ftree-vectorize -fPIC -fstack-protector -O2 -pipe -isystem /opt/anaconda3/include -O -ffixed-line-length-132 -w -c dummy_fct.f -I../../Source/ -I../../Source/PDF/gammaUPC
	    x86_64-apple-darwin13.4.0-gfortran: warning: could not understand version 13.04.00
	    /opt/anaconda3/bin/x86_64-apple-darwin13.4.0-gfortran -march=core2 -mtune=haswell -ftree-vectorize -fPIC -fstack-protector -O2 -pipe -isystem /opt/anaconda3/include -O -ffixed-line-length-132 -w -c auto_dsig.f -I../../Source/ -I../../Source/PDF/gammaUPC
	    x86_64-apple-darwin13.4.0-gfortran: warning: could not understand version 13.04.00
	    /opt/anaconda3/bin/x86_64-apple-darwin13.4.0-gfortran -march=core2 -mtune=haswell -ftree-vectorize -fPIC -fstack-protector -O2 -pipe -isystem /opt/anaconda3/include -O -ffixed-line-length-132 -w -c auto_dsig1.f -I../../Source/ -I../../Source/PDF/gammaUPC
	    x86_64-apple-darwin13.4.0-gfortran: warning: could not understand version 13.04.00
	    /opt/anaconda3/bin/x86_64-apple-darwin13.4.0-gfortran -march=core2 -mtune=haswell -ftree-vectorize -fPIC -fstack-protector -O2 -pipe -isystem /opt/anaconda3/include -O -ffixed-line-length-132 -w -c matrix1_orig.f -I../../Source/ -I../../Source/PDF/gammaUPC
	    x86_64-apple-darwin13.4.0-gfortran: warning: could not understand version 13.04.00
	    /opt/anaconda3/bin/x86_64-apple-darwin13.4.0-gfortran -o madevent_forhel driver.o myamp.o genps.o unwgt.o setcuts.o get_color.o cuts.o cluster.o reweight.o initcluster.o addmothers.o setscales.o idenparts.o dummy_fct.o auto_dsig.o auto_dsig1.o  matrix1_orig.o   -L../../lib/ -ldhelas -ldsample -lmodel -lgeneric -lpdf -lgammaUPC -lcernlib  -lbias  -Wl,-pie -Wl,-headerpad_max_install_names -Wl,-dead_strip_dylibs -Wl,-rpath,/opt/anaconda3/lib -L/opt/anaconda3/lib 
	    x86_64-apple-darwin13.4.0-gfortran: warning: could not understand version 13.04.00
	    ld: -rpath can only be used when targeting Mac OS X 10.5 or later
	    collect2: error: ld returned 1 exit status
	    make: *** [madevent_forhel] Error 1
	    
	Please try to fix this compilations issue and retry.
	Help might be found at https://answers.launchpad.net/mg5amcnlo.
	If you think that this is a bug, you can report this at https://bugs.launchpad.net/mg5amcnlo


I am attaching the bug report also.

Thanks,
Chayan