Found it - Cameras USB mode has to stand on MTP/PTO. My camera was on UVC/UAC and with this setting one won´t get a connection to Helicon Remote. Now, with MTP/PTP everything is perfect.

Thanks for the hint with the new version.

Hi Catherine,
I´m now on version 4.5.7.W and indeed, something changed. I don´t get the mentioned error message anymore when I connect the new camera, but that´s it. Helicon Remote doesn´t see the connected camera, it looks the same as there was no camera connected.

I tried several times with first ...

Thank´s for this hint, I will try it today. Until now I only looked in the program under help/check for updates and there I was told that I´m up to date. I will let you know if it works.

I was using Helicon Remote with my Nikon D850 and my Nikon Zfc without any problemes. Now I bought a Nikon Z50II, but I can´t connect it to Helicon Remote. I always get the error message: "z50_2 is an unsupported camera model". But when I look in the list of supported cameras on the Helicon Remote ...