Error when using Colorize popup window

[tridian-tn]

Problem to Solve

Exception when using Alt-C to bring up Colorise window and then selecting a language and confirming.

To Reproduce

Steps to reproduce the behavior:

1. Select text
2. Press Alt-C
3. Use the Select Language popup window to select any language
4. Press return or click OK
5. Error pops up

The same error doesn't popup if I use the ribbon (e.g. More->Colorize->C#)

Expected Behavior

The selected text has the syntax highlighting applied without an error

Screenshots

Environment (if applicable)

Microsoft® OneNote® for Microsoft 365 MSO (Version 2410 Build 16.0.18129.20100) 32-bit

Additional Context

Add any other context about the problem here. Attach page XML file or the app log file as appropriate. You can find the log file here: %localappdata%\temp\OneMore.log

01|07:59:07.570| Starting dllhost 22240, 1700 Mhz, 31 MB, en-US/en-US, v6.6.1, OneNote 15.0, Office 16.0, 2024-11-06 07:59
01|07:59:07.578| ..Windows 11 Professional, Version 24H2, Build 26100, 64 bit
01|07:59:07.591| ..C:\Program Files (x86)\Microsoft Office\root\Office16\ONENOTE.EXE (16.0.18129.20116)
01|07:59:07.644| ..OnConnection(ConnectionMode:ext_cm_Startup,custom[1:Int32])
01|07:59:07.645| ..OneAddInsUpdate(custom[])
03|07:59:09.016| ..building ribbon
03|07:59:09.034| ..building ribbon colorizer commands
03|07:59:09.588| ..building ribbon groups
03|07:59:09.593| ..building context menu
01|07:59:09.779| ..OnStartupComplete(custom[])
01|07:59:09.782| ..starting command service
01|07:59:09.785| ..starting reminder service
01|07:59:09.788| ..starting navigation service
01|07:59:09.792| ..hashtag service is disabled
01|07:59:09.792| ..ready
10|07:59:09.807| Running command UpdateCommand
04|07:59:10.741| ..defined 51 hotkeys for input locale 2057
05|11:04:22.426| Running command CommandPaletteCommand
05|11:04:22.635| ..discovered 185 commands, 4 mru
06|11:04:27.568| ..Running command InsertTextBoxCommand
10|11:04:32.224| Running command ChooseColorizerCommand
10|11:04:35.700| Error running command ChooseColorizerCommand
10|11:04:35.700| System.NullReferenceException
Message: Object reference not set to an instance of an object.
Source: River.OneMoreAddIn
StackTrace:    at River.OneMoreAddIn.Commands.ChooseColorizerCommand.<Execute>d__2.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.GetResult()
   at River.OneMoreAddIn.CommandFactory.<Run>d__6.MoveNext()
TargetSite: [River.OneMoreAddIn] River.OneMoreAddIn.Commands.ChooseColorizerCommand+<Execute>d__2::MoveNext()

THE FINE PRINT This is a hobby project that I started for myself. I'm happy to take requests and will promise to
consider each one carefully but offer no guarantees that I will ultimately agree to their
usefulness or have time to implement any of them. If OneNote offers a "close enough" work-around
then I will probably reject the request - you've been warned!