Internal model load error

[KSAMissionCtrl]

this error shows up in the log when loading v0.5.2.1 with just USI Tools, CRP (v0.5.1.1), Firespitter (v7.2.3) and Squad

[LOG 15:17:37.654] Load(Model): UmbraSpaceIndustries/ExpPack/AES/Spaces/AES_Internal
[ERR 15:17:37.659] File error:
Failed to read past end of stream.
  at System.IO.BinaryReader.ReadByte () [0x00000] in <filename unknown>:0 
  at System.IO.BinaryReader.Read7BitEncodedInt () [0x00000] in <filename unknown>:0 
  at System.IO.BinaryReader.ReadString () [0x00000] in <filename unknown>:0 
  at PartReader.ReadTextures (System.IO.BinaryReader br, UnityEngine.GameObject o) [0x00000] in <filename unknown>:0 
  at PartReader.ReadChild (System.IO.BinaryReader br, UnityEngine.Transform parent) [0x00000] in <filename unknown>:0 
  at PartReader.Read (.UrlFile file) [0x00000] in <filename unknown>:0 

[WRN 15:17:37.660] Model load error in 'D:\Steam Games\steamapps\common\Kerbal Space Program\GameData\UmbraSpaceIndustries\ExpPack\AES\Spaces\AES_Internal.mu'

output_log.txt