Historical Progression Tech Tree Issues

[PFCoffey]

The tech tree does not seem right, gaps in jet engines, aerodynamics, flight control, and others. I've unlocked some early ones, but the later ones are blocked because of these gaps.

[ZoeBijl]

I have the same issue, but only in Jet Engines. Apparently there is way more after what’s in the screenshot.

Here is my mod-list:

KSP: 1.2.2 (Unix) - Unity: 5.4.0p4 - OS: Mac OS X 10.12.1
B9 Part Switch - 1.5.1
Camera Focus Changer - 1.0.1
Chatterer - 0.9.91.1586
Color Coded Canisters - 1.5.1
Community Category Kit - 1.2
Community Resource Pack - 0.6.3
Contract Configurator - 1.22.1
Contract Pack: Historical Progression - 1.3
Contract Pack: Bases and Stations - 3.5
Contract Pack: Unmanned Contracts - 0.3.27
DMagic Orbital Science - 1.3.0.7
Fuel Tanks Plus - 1.11
Historical Progression Tech Tree - 1.8
Interstellar Fuel Switch - 2.3
KSP-AVC Plugin - 1.1.6.2
Kerbal Engineer Redux - 1.1.2.8
Docking Port Alignment Indicator - 6.5.1
NearFutureElectrical - 0.8.2
Final Frontier - 1.2.5.2906
S.A.V.E - 1.4.1.2315
RLA_Continued - 14.0.1
RealChute - 1.4.1.2
RealPlume - Stock - 0.11.1
RemoteTech - 1.8.3
StationPartsExpansion - 0.4.2
TAC Life Support - 0.12.7
Trajectories - 1.6.5
Kerbal Alarm Clock - 3.8.3

@PFCoffey can you post your mod-list too? Maybe there is a conflicting mod. Not related to other mods. This is an issue with hide empty nodes.

[futuramaking]

Same here, if I remove HideEmptyTechTreeNodes-Overrides.cfg, I works but have a lot of empty nodes...

[futuramaking]

this fixes most nodes, except Nuclear propulsion, hope it helps until the actual fix.

remove the .txt and place in \HPTechTree.

HPTechTree.cfg.txt