Avoid Houdini crash when having invalid filename for standin node.
This should be handled on NSI side but for now we do this to avoid an unwanted crash of Houdini. Seems it happens on Windows only. This fixes #384 (closed) and #475 (closed)
This should be handled on NSI side but for now we do this to avoid an unwanted crash of Houdini. Seems it happens on Windows only. This fixes #384 (closed) and #475 (closed)