Every time I open Javelin I get an error "Argument Exception: Illegal Character in the path"
which later when clicking in the OK button will go but will let the javelin tab unusable.
All Supported Javelin Environments
TDM
Test Data Manager
One of the paths in the file located in: %AppData%\Grid-Tools\Javelin\RecentFiles.txt had and extra character \
Removed the conflicted line from the file located in:
%AppData%\Grid-Tools\Javelin\RecentFiles.txt :
and that resolved the issue.