Accidentally omitted $ in a collection of hex digits causes catastrophe

[KungFuFurby]

Reported by Exodustx0 on the SMWCentral moderation Discord server with the $DD hex command, and later reported by Samantha on the SMWCentral Discord server with the $FA hex command (thus, we need to see if this is two different places or not). Accidentally omitting a $ and allowing the compiler to keep going can result in catastrophe on the SPC side when the song data compiles.

$DD$0C90e and $FA$02F4 are the example cases that compiled successfully, only to cause catastrophe.