Docking Ports not loading when Module Manager (4.2.1) is installed

[FrenchToast0341]

KSP: 1.12.3.3173 Windows 64bit

Problem:  Module Manager mod, alone, causes KSP to no longer load any of the stock docking parts. 

Mods Installed:

Mods are managed through CKAN (1.30.4)

• Module Manager (ModuleManager 4.2.1)

• [x] Science! Continued (xScienceContinued 6.0.0.9)

• Astronomer's Visual Pack (AstronomersVisualPack 3:v4.11)

• Astronomer's Visual Pack-8k Textures (AVP-8kTextures v1.12)

• Breaking Ground (BreakingGround-DLC 1.7.1)

• ClickThrough Blocker (ClickThroughBlocker 1:0.1.10.17)

• Environmental Visual Enhancements Redux (EnvironmentalVisualEnhancements 3:1.11.6.1)

• Kerbal Engineer Redux (KerbalEngineerRedux 1.1.9.0)

• Making History (MakingHistory-DLC 1.12.1)

• scatterer (Scatterer 3:v0.0829)

• Scatterer Default Config (Scatterer-config 3:v0.0829)

• Scatterer Sunflare (Scatterer-sunflare 3:v0.0829)

• SpaceTux Library (SpaceTuxLibrary 0.0.8.4)

• Toolbar Controller (ToolbarController 1:0.1.9.6)

• Trajectories (Trajectories v2.4.3)

• Waterfall Core (Waterfall 0.8.1)

• Zero MiniAVC (ZeroMiniAVC 1:1.1.2.4)

Reproduction Steps:

Install Module Manager, with or without any other mods that use it, open KSP, start or resume a game. Loading VHA/VBA, there won't be docking parts in the coupling menu. In science and career modes, the tech tree won't docking parts listed either.

Log: 

Link to player log and output log.

Things I've tried so far:

1. Clean install of KSP

2. Cleared cache of mod files and plugins

3. Load mods that DON'T require Module Manager (Engineer Redux, EVE, etc., and they work fine)

4. Looked at Module Manager config files in Notepad, can't see anything obviously wrong/edits to these parts

Any help would be super appreciated!

[FrenchToast0341]

Issue resolved. Only plugin data from docking alignment indicator was interfering with MM when it loaded. Deleted that plugin data and voila.