If you get any of the error messages listed below when trying to install NavStation, 

please perform the following:

1. Right click "NavStation01.cab" and click "Properties"

2. Click on the "Digital Signatures" tab

3. Select the line where it says "NAVTOR AS" and click the "Details" button

4. Click on the "Certification Path" tab

If there are any certificate errors (red cross), please run the following file [NAVSTICK]:\INFO\NAVTOR\Setup\Microsoft\rootsupd.exe to update your Windows root certificates and then try to run the NavStation installer again.

If still same issue, please send an email with screenshots of error message to technical@navtor.com