[galaxy-user] Error running tool

Hello everybody, I am trying to run my tool Vispa but every time i try to i got this error messages: An error occurred running this job: /home/galaxy/galaxy-dist/tools/vispa/main.bash: line 13: ./parser_v.2.sh: No such file or directory /home/galaxy/galaxy-dist/tools/vispa/main.bash: line 16: ./vispa.bash: No such file or directory although all these files are reside under the same directory and have the permission 755. how can I solve the problem? Thanks and regards, Tuqa.