There is probably something wrong in this object datamembers. Try to open the .lks file to recompile it and edit it. If it doesn't crashes, the problem is in the process file(.l4p). But if not, the source file(.lks) has the problem. If you are familiar with the lookout source file, open is by text editor and try to find it out, or post it here.
Ryan Shi
National Instruments