If there would be an expicit definition the crash wouldn`t exist. IntenseX crashes unreproducable by E1513 and E1514 errors after some gameplay. Just read yourself a bit into the IntenseX forums. http://www.intense-i.com/forum/showthread.php?t=447&page=2 (post number #15)
JCL knows about this bug since a few months and it`s caused by the Acnex Engine and not IntenseX if Aris is right.