shell_SUITE failure (presumably caused by gen_stream)

[Jay Nelson]

The failure in shell_SUITE is a parsing error on rr(prim_file).  It  
seems that prim_file.erl is an erts preloaded file.  I do not know  
what that means.  In what ways could my test_suite, which creates and  
destroys processes, impact a "preloaded file" module?  If I create a  
crash, could it somehow unload the preloaded files or is there some  
way that preloaded memory could be modified or overwritten?

jay