When you run an instance of ISL Light a temporary working directory is created. This directory stores application files (such as log files) and crash reports.
If you are running multiple instances of ISL Light, each instance has its own working directory. Current working directories are numbered sequentially. Note: if you open a new instance of ISL Light, it will rewrite the contents of old unused folders starting with folder number 1.
Path of the current working directory depends on the OS and weather you installed the ISL Light application or not. For more information on the download, run/install procedures and exact locations of working directories please see: