MultiUserClient file exists but is being treated like it doesn't when compiling from source

[ZeroBreak]

After reevaluating this post and narrowing things down, I’m putting it back up. With that out of the way, the issue that I’m having is that a specific file in the multiuserclient plugin is not being found by the compiler. More specifically, the issue is with MultiStreamColumns_AssignedClients.cpp which is giving me the following result:

Cannot open include file: Engine/Plugins/Developer/Concert/ConcertApp/MultiUserClient/Source/MultiUserClient/Private/Widgets/ActiveSession/Replication/Client/Multi/Columns/AssignedClients/MultiStreamColumns_AssignedClients.cpp': No such file or directory

This is on 5.5 of Unreal, and I’m in the process of updating so this is holding me back from completing the process. 5.4 never gave me this problem, but unfortunately GitHub Desktop gave me the newest version so I can’t roll back (or at least I’m not sure how). I checked to see if the file exists as it says, and somehow it does. Additionally, none of the other files are giving me this problem. Any idea on why this is happening?

EDIT: I should note that this occurs when processing the Module.MultiUserClient.cpp file that’s generated during the compilation process. Though I’m not 100% sure if it has anything to do with interrupting things because of a plugin that I forgot to add the first time, I’m going to clean the solution as a part of verifying that something else ain’t going on from that.

EDIT 2: Didn’t help to clean, so something else must be up.

EDIT 3: In case it helps, the same thing is happening with the following file:

Engine\Plugins\Experimental\Animation\HierarchyTableBuiltin\Intermediate\Build\Win64\x64\UnrealEditor\Development\HierarchyTableBuiltinUncookedOnly\Module.HierarchyTableBuiltinUncookedOnly.cpp.dep.json

[ZeroBreak]

Bit of an update on this. Owing that my revision time for this question has expired and the desire to be a bit more specific than I was about the matter, I’m closing this and starting a new post that’s a bit more on point. Sorry about that!

[Scarletioshub]

To fix the issue:

1. Verify File Paths: Ensure paths are correct and case-sensitive matches are accurate.
2. Activate Plugin: Confirm the MultiUserClient plugin is enabled and properly configured.
3. Rebuild Solution: Delete Intermediate, Binaries, and Saved folders, then rebuild.
4. Regenerate Project Files: Right-click your .uproject and select Generate Visual Studio project files.
5. Check File Existence: Confirm the file is in the correct location and accessible.
6. Update Unreal Engine: Ensure the plugin is compatible with Unreal Engine 5.5.
7. Compile Separately: Try compiling the plugin individually to catch specific errors.
8. Review Logs: Enable verbose logging and review the build output for detailed errors.

If the problem persists, consult Unreal Engine forums or plugin maintainers for further support.

[ZeroBreak]

I was referring to the engine itself, not an individual project. In any case, I intended to move this to a reposted topic that provides additional information on what’s happening, so I really didn’t want this to receive replies. But thanks anyway.