E:\FL\Scratch\Source\Client\space\Gameobj.cpp(133) : *** WARNING: Archtype(0xa4340e49) explosion_arch(0xa6b55642) not found.
$ ./whatis 0xa4340e49
2754874953 dsy_raijin Wyvern (V. H. F.)
I believe the wyvern's explosion_arch is set incorrectly. It refers to "explosion_dsy_raijin" when the explosion_arch entry is "explosion_dsy_ku_raijin".