Error when evaluating D2SLAM on Single CPU

[jyue86]

I'm following the instructions on evaluating D2SLAM on the single CPU. Unfortunately, the following error regarding a roslaunch issue is raised.

Usage: roslaunch [options] [package] <filename> [arg_name:=value...]
       roslaunch [options] <filename> [<filename>...] [arg_name:=value...]

If <filename> is a single dash ('-'), launch XML is read from standard input.

roslaunch: error: The following input files do not exist:  
/root/entry_point.sh: line 7: enable_loop:=true: command not found

I'm confident that this issue somehow occurs when this line runs, based on the print statements. Do you have some insight on which ros launch file runs, and which arguments are passed in? That way, I can figure out what's the invalid argument that I'm providing.

Furthermore, I'm curious to know what's an example config file that would be provided for config_path.