Figured it out. I had installed Visual C for x64 after googling the DLL issues, but you need the x86 (32 bit) version to get the DLLs needed to run these programs. FYI it seems you can have them both installed at the same time no problem. I recommend adding this to the guide that specifically 32 bit / x86 Visual C is needed, it does not come with Windows by default.
Both the updater and the checker throw DLL errors when trying to open them, including when running as administrator. Using Windows 11.
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