Troubleshooting: No sound when using KB-1 in the midi effects

Can anyone help me out? When I use any of the apps, specifically KB-1, I cannot get any sound in the midi effects. I’m new to Cubasis 3 and love it but I would like to use the midi effects tools.

Thanks in advance

I am having a similar problem - I think it is due to ignorance - I am getting no sound when I try and play a midi file. I have worked for years with one of your competitors and just came to Cubase 10.5 and really love it (so far). I think I also need to figure out how to search this forum - maybe if I bought myself a working brain first? Thanks in advance for your help.