TecDoc loaders often write verbose logs in %APPDATA%\TecDoc\Logs or ./logs/tecdoc_error.log . Search for the word exclusive or EACCES (Linux) or ERROR_SHARING_VIOLATION (Windows).
The current user account lacks the "Write" or "Modify" permissions necessary to set an exclusive lock on the configuration directory.
: Check the Windows Registry (regedit) to ensure the installation paths for the TecDoc Catalogue match your actual folder structure.