Startup loading error before main menu:
[ERR 23:09:41.374] ADDON BINDER: Cannot resolve assembly: ContractsWindow.Unity, Culture=neutral, PublicKeyToken=null
[ERR 23:09:41.420] ADDON BINDER: Cannot resolve assembly: ContractsWindow.Unity, Culture=neutral, PublicKeyToken=null
v9.4 on KSP 1.10.1. Log attached.
Similar issue: https://github.com/CYBUTEK/KerbalEngineer/issues/156
KSP.log