Click doesn't work in main menu

[rocketApe]

Since an update I can't get past the main menu.   I see the "Start Game", "Settings", etc. options, and they highlight correctly as I mouse over.  Clicking on an item also changes the text color while the mouse is down.  But nothing else happens on clicking.

I've tried reinstalling (with steam cloud sync disabled), and it didn't help.   I previously had mods, but none since reinstalling.

I have version 1.8.1.2694 (WindowsPlayer x64) en-us

ksp.log is here :https://pastebin.com/BJtteHVC

It seems like output_log.txt is not being written to.

FWIW, the following exception can be seen in KSP.log:

1. [EXC 15:47:41.134] InvalidOperationException: It is illegal to invoke a method on a type loaded using the ReflectionOnly api.
2.     System.Reflection.MonoCMethod.InternalInvoke (System.Object obj, System.Object[] parameters) (at <ad04dee02e7e4a85a1299c7ee81c79f6>:0)
3.     System.RuntimeType.CreateInstanceMono (System.Boolean nonPublic) (at <ad04dee02e7e4a85a1299c7ee81c79f6>:0)
4.     System.RuntimeType.CreateInstanceSlow (System.Boolean publicOnly, System.Boolean skipCheckThis, System.Boolean fillCache, System.Threading.StackCrawlMark& stackMark) (at <ad04dee02e7e4a85a1299c7ee81c79f6>:0)
5.     System.RuntimeType.CreateInstanceDefaultCtor (System.Boolean publicOnly, System.Boolean skipCheckThis, System.Boolean fillCache, System.Threading.StackCrawlMark& stackMark) (at <ad04dee02e7e4a85a1299c7ee81c79f6>:0)
6.     System.Activator.CreateInstance (System.Type type, System.Boolean nonPublic) (at <ad04dee02e7e4a85a1299c7ee81c79f6>:0)
7.     System.Activator.CreateInstance (System.Type type) (at <ad04dee02e7e4a85a1299c7ee81c79f6>:0)
8.     GameParameters..ctor () (at <9d71e4043e394d78a6cf9193ad011698>:0)
9.     GameParameters.SetDifficultyPresets () (at <9d71e4043e394d78a6cf9193ad011698>:0)
10.     GameParameters.GetDefaultParameters (Game+Modes mode, GameParameters+Preset p) (at <9d71e4043e394d78a6cf9193ad011698>:0)
11.     MainMenu.Start () (at <9d71e4043e394d78a6cf9193ad011698>:0)

I've already tried a fresh install.  I'm not sure what else to try.  Are there registry keys or some other state that I should be clearing?

 

Edited November 20, 2019 by rocketApe
More info

[rocketApe]

I just investigated whether I can provide a output_log.txt as well.  But it looks it's not being written to.

FWIW, the following exception can be seen in KSP.log:

1. [EXC 15:47:41.134] InvalidOperationException: It is illegal to invoke a method on a type loaded using the ReflectionOnly api.
2.     System.Reflection.MonoCMethod.InternalInvoke (System.Object obj, System.Object[] parameters) (at <ad04dee02e7e4a85a1299c7ee81c79f6>:0)
3.     System.RuntimeType.CreateInstanceMono (System.Boolean nonPublic) (at <ad04dee02e7e4a85a1299c7ee81c79f6>:0)
4.     System.RuntimeType.CreateInstanceSlow (System.Boolean publicOnly, System.Boolean skipCheckThis, System.Boolean fillCache, System.Threading.StackCrawlMark& stackMark) (at <ad04dee02e7e4a85a1299c7ee81c79f6>:0)
5.     System.RuntimeType.CreateInstanceDefaultCtor (System.Boolean publicOnly, System.Boolean skipCheckThis, System.Boolean fillCache, System.Threading.StackCrawlMark& stackMark) (at <ad04dee02e7e4a85a1299c7ee81c79f6>:0)
6.     System.Activator.CreateInstance (System.Type type, System.Boolean nonPublic) (at <ad04dee02e7e4a85a1299c7ee81c79f6>:0)
7.     System.Activator.CreateInstance (System.Type type) (at <ad04dee02e7e4a85a1299c7ee81c79f6>:0)
8.     GameParameters..ctor () (at <9d71e4043e394d78a6cf9193ad011698>:0)
9.     GameParameters.SetDifficultyPresets () (at <9d71e4043e394d78a6cf9193ad011698>:0)
10.     GameParameters.GetDefaultParameters (Game+Modes mode, GameParameters+Preset p) (at <9d71e4043e394d78a6cf9193ad011698>:0)
11.     MainMenu.Start () (at <9d71e4043e394d78a6cf9193ad011698>:0)

I've already tried a fresh install.  I'm not sure what else to try.  Are there registry keys or some other state that I should be clearing?