If you get an error or an unknown exception, perhaps you have find a bug in the program. You could contact the authors to inform about it. We like to know the file which make the problem and your computer configuration. We will correct the bug or will explain you which was the cause.
If you get an error when you load a scene, perhaps there is an error in the .rt file. Error code 1 means generic error, the program cannot explain you what type of error is. But you obtain the position in which the error was encountered, so you can read the file and modify it.
Sometimes the position could be a little incorrect, a little moved forward, but at least a line.