Before trying to run VjControl, you should perform the steps discussed under "User Setup" in the VR Juggler Getting Started Guide. In particular, make sure all your environment variables are set correctly.

It is important that you create a ~/.vjconfig directory, as this is where VjControl stores its own preferences.

You should also find out where the VR Juggler config files you should use are located. The VR Juggler distribution includes a number of sample config files in the directory $VJ_BASE_DIR/share/Data/configFiles. Your system administrators may also have a location for customized config files. For ease of use, you may wish to copy commonly-used config files to your ~/.vjconfig directory. This is also a good place to keep any config files that you modify to your own tastes.