I stumbled upon it because of a chain of actions that leads to 4 MM patching errors:
GameData\RealPlume-Stock\Space Launch System\R4D11.cfg adds a PLUME node Hypergolic-OMS-White and tries to patch the non-existing ModuleEngines*
GameData\RealPlume\000_Generic_Plumes\Hypergolic-OMS-White.cfg adds the EFFECTS node Hypergolic-OMS-White
GameData\RocketSoundEnhancement\Patches\Hypergolic-OMS-White.cfg fails with "Cannot parse variable search when inserting new key volume = #$/MODULE[ModuleEngines*]/maxThrust$" on 4 occasions
The patching chain assumes it's an engine, because RealPlume-Stock does @MODULE[ModuleEngines*]
I stumbled upon it because of a chain of actions that leads to 4 MM patching errors:
The patching chain assumes it's an engine, because RealPlume-Stock does @MODULE[ModuleEngines*]
But it's an RCS thruster.