I am a new user, trying to learn the software for my final year physics project. I'm using a windows 10 machine running mg5_aMC v2.8.1 through CYGWin. When I try to complete the tutorial everything works fine until: MG5_aMC>output MY_FIRST_MG5_RUN which returns: INFO: initialize a new directory: MY_FIRST_MG5_RUN INFO: remove old information in MY_FIRST_MG5_RUN bin/internal/clean_template: bin/internal/gen_cardhtml-pl: /usr/bin/perl: bad interpreter: No such file or directory INFO: Organizing processes into subprocess groups INFO: Generating Helas calls for process: g g > t t~ WEIGHTED<=2 @1 INFO: Processing color information for process: g g > t t~ @1 INFO: Generating Helas calls for process: u u~ > t t~ WEIGHTED<=2 @1 INFO: Processing color information for process: u u~ > t t~ @1 INFO: Combined process c c~ > t t~ WEIGHTED<=2 @1 with process u u~ > t t~ WEIGHTED<=2 @1 INFO: Combined process d d~ > t t~ WEIGHTED<=2 @1 with process u u~ > t t~ WEIGHTED<=2 @1 INFO: Combined process s s~ > t t~ WEIGHTED<=2 @1 with process u u~ > t t~ WEIGHTED<=2 @1 INFO: Creating files in directory P1_gg_ttx WARNING: Some T-channel width have been set to zero [new since 2.8.0] if you want to keep this width please set "zerowidth_tchannel" to False INFO: Generating Feynman diagrams for Process: g g > t t~ WEIGHTED<=2 @1 INFO: Finding symmetric diagrams for subprocess group gg_ttx INFO: Creating files in directory P1_qq_ttx INFO: Generating Feynman diagrams for Process: u u~ > t t~ WEIGHTED<=2 @1 INFO: Finding symmetric diagrams for subprocess group qq_ttx Generated helas calls for 2 subprocesses (4 diagrams) in 0.016 s Wrote files for 16 helas calls in 0.354 s ALOHA: aloha creates FFV1 routines ALOHA: aloha creates VVV1 set of routines with options: P0 save configuration file to /cygdrive/e/MPhys_Project/MadGraph/MG5_aMC_v2_8_1/MY_FIRST_MG5_RUN/Cards/me5_configuration.txt INFO: Use Fortran compiler gfortran INFO: Use c++ compiler g++ INFO: Generate web pages Command "output MY_FIRST_MG5_RUN" interrupted with error: Exception : ['.//cygdrive/e/MPhys_Project/MadGraph/MG5_aMC_v2_8_1/MY_FIRST_MG5_RUN/bin/internal/gen_cardhtml-pl'] fails with no such file or directory Please report this bug on https://bugs.launchpad.net/mg5amcnlo More information is found in 'MG5_debug'. Please attach this file to your report. I also receive the error: MG5_aMC>install pythia8 You are installing 'pythia8', please cite ref(s): arXiv:1410.3012. Downloading the HEPToolInstaller at: http://madgraph.physics.illinois.edu/Downloads/HEPToolsInstaller/HEPToolsInstaller_V135.tar.gz Command "install pythia8" interrupted with error: Exception : ['./wget', 'http://madgraph.physics.illinois.edu/Downloads/HEPToolsInstaller/HEPToolsInstaller_V135.tar.gz', '--output-document=/cygdrive/e/MPhys_Project/MadGraph/MG5_aMC_v2_8_1/HEPTools/HEPToolsInstallers.tar.gz'] fails with no such file or directory Please report this bug on https://bugs.launchpad.net/mg5amcnlo More information is found in 'MG5_debug'. Please attach this file to your report. I think both issues are related to MadGraph's interaction with my browser but of course I don't know. I have it currently set to operate with FireFox by pointing directly to my firefox path install in the config.txt file but have tried other browsers with no success. Any advice on how to solve this problem is appreciated. Thank you

When	Who	Action	New State
2020-10-12	Olivier Mattelaer	Answer	Answered
2020-10-12	Jon-Mycal Palmer	Reopen	Open
2020-10-12	Olivier Mattelaer	Answer	Answered
2020-10-13	Jon-Mycal Palmer	Confirm	Solved

MadGraph5_aMC@NLO

History of question #693411