Hi,
I have never seen that, but I am using NCS 1.9.2.
Going from version 1.6.1 to 1.9.2 is a big step since a lot of things have changed. I am not sure if just upgrading will work properly. If you do that I would recommend to install the necessary prerequisites for version 1.9.2 to run before the update. Check the download page for software.
Alternative is to make a clean installation of NCS meaning starting all over. Here is a guide for that How to make a clean installation of Netcam Studio
Install prerequisites first is best.
Save version 1.6.1 if something goes wrong.
-Henrik
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