typically indicates a disconnect between the TecDoc application and its underlying database or a corruption in the environment settings defined in the configuration files 1. Identify the Core Issue
Loading data failed. Check the configuration file / install.
Verify configuration file path & name
files) aren't properly registered. Re-running the installation "Repair" mode from the Control Panel can re-link these files. Clean Configuration Cache : Delete temporary files in the AppData/Local/TecAlliance
TecDoc can’t find or read its data source — usually due to a missing, incomplete, or incorrectly configured installation.
By systematically checking these points, you should be able to resolve the "Loading Data Failed" error and get your catalogue back online.