Cargo bays not unlocking

[Fraeyen]

For some reason the small cargo and 1.25m cargo bays will not unlock in the vab. I’ve researched and paid the entry fee in r&d yet it still is grayed out in the VAB. When moused over in vab, it states it requires an entry purchase in R&D but doesn’t have the green bar to pay it. When I return to the R&D building, the parts are duplicated, with one set purchased and one set requiring purchase. This continues no matter how many times I purchase, with more and more copies. I can remove the duplicates by deleting them from the save, but cannot find where they are tracking individual buy ins in the save to edit that. Does anyone either know how to fix this, or at least the save location so I can force it to recognize my buy in?

[Fraeyen]

Posting an update in case people have the same issue. I realized that these two cargo parts are in the base game & the breaking ground expansion, deleting them from the breaking ground expansion files resolves whatever conflict is happening. I looked through the files and they are identical of that location so no gameplay is affected. Also for those curious the save game appears to track available parts by listing them under the tech in the save.

[Aelfhe1m]

7 hours ago, Fraeyen said:

or at least the save location so I can force it to recognize my buy in?

In the save file, purchased tech is stored in the SCENARIO/ResearchAndDevelopment node. Each TechTree node you have unlocked has a node entry with a list of parts purchased, one line per part, with the part name (not title). e.g. 

Spoiler

SCENARIO
{
	name = ResearchAndDevelopment
	scene = 7, 8, 5, 6
	sci = 10.2999992
	Tech
	{
		id = start
		state = Available
		cost = 0
		part = Engineer7500
		part = EngineerChip
		part = basicFin
		part = evaJetpack
		part = evaChute
		part = mk1pod.v2
		part = solidBooster.sm.v2
		part = GooExperiment
		part = trussPiece1x
		part = parachuteSingle
		part = kv1Pod
	}
	Tech
	{
		id = engineering101
		state = Available
		cost = 5
		part = Decoupler.1
		part = sensorThermometer
		part = SurfAntenna
	}
	Tech
	{
		id = basicRocketry
		state = Available
		cost = 5
		part = liquidEngine2.v2
		part = fuelTankSmallFlat
	}
	Tech
	{
		id = survivability
		state = Available
		cost = 15
		part = sensorBarometer
		part = HeatShield1
		part = ServiceBay.125.v2
	}
	
	=== [SNIP] ===
	
	Science
	{
		id = mysteryGoo@KerbinSrfLandedLaunchPad
		title = Mystery Goo™ Observation from LaunchPad
		dsc = 1
		scv = 0.230769247
		sbv = 0.300000012
		sci = 3
		asc = True
		cap = 3.9000001
	}
	
	=== [SNIP] ===
}