Dynmap Crashing with no explanation

[ReltivlyObjectv]

I am trying to define custom blocks, and dynmap crashes the server right after it says that textures are loaded. I am running Thermos 1558
Log Immediately before crash:
[03:15:42] [Server thread/INFO]: [Dynmap] Mod Support processing completed [03:15:43] [Server thread/INFO]: [Dynmap] aether[1.7.10-1.6] textures enabled

/minecraftdirectory/dynmap/renderdata/aether-texture.txt :
version:1.7.10 modname:aether texturepath:assets/aether/textures/blocks/ texture:id=Holystone texture:id=Quicksoil block:id=166,allfaces=0:Holystone ~

[FedUpWith-Tech]

Assuming this is fixed in a later release or otherwise no longer relevant- please open a new issue if this persists.