CalibrationGroup Internal Error in Navigator HHR
Error Message:
$$[ Error: Internal error in CalibrationGroup ]$$
Overview:
This error occurs during job rendering in Navigator HHR when the Raster Image Processor (RIP) encounters invalid or missing calibration data. This situation typically halts job processing and prevents output from reaching the engine, which can disrupt production schedules and lead to delays in job completion.
Probable Cause:
- Corrupted calibration files in the RIP configuration folder, which can occur due to various reasons.
- This is commonly observed after a sudden power loss or interrupted system writes that compromise file integrity.
- In some cases, the files may contain only NULL characters or may even be empty, rendering them unusable for processing.
- An improper restoration from a backup that excludes calibration data can also lead to this issue, leaving the system without the necessary parameters for accurate rendering.
- Accidental deletion or overwrite of the calibration directory may further exacerbate the problem, leading to job failures.
File Paths to Check:
C:\Navigator\Renderers\NR_1\SW\Config\Calibration\Curves\CMYK\Default
C:\Navigator\Renderers\NR_1\SW\Config\Calibration\Curves\CMYK_Backup\Default
Resolution Steps:
1. Inspect calibration files using a text editor like Notepad++. This will help in identifying the condition of the files.
- Confirm that the files contain valid, readable data (they should not just consist of NULL characters or be completely empty).
2. Restore known-good calibration files from a verified system backup. This is crucial for ensuring that the RIP has access to the correct calibration information.
- Overwrite the current contents of the folders mentioned above with the restored files. It should look like the image below.
3. Restart Navigator RIP and reprocess the job to determine if the issue has been resolved.
4. Optional: Verify that the system is connected to an Uninterruptible Power Supply (UPS) to prevent future corruption due to power loss situations.
5. Optional: It is advisable to implement backup integrity checks or hash validation to ensure that the calibration files remain intact and uncorrupted.
Preventive Recommendations:
- Ensure that all RIP and server PCs are protected by a battery backup (UPS) to safeguard against power fluctuations.
- Make regular backups of the Navigator folder, including calibration directories, to avoid data loss.
https://help.xitron.com/a/solutions/articles/1000329597
- Validate backup integrity and confirm that calibration files are not empty or corrupted, maintaining a reliable set of recovery data.
- Avoid manual deletion or renaming of calibration paths to prevent unexpected errors in the job processing workflow.