Could you also please try the dll, with RC3 and post logs?I can confirm this issue.
I will try to update the CAM module ASAP, but the problem was present just after I started using the 3650-CI module.
If additional logs are needed, I'll gather some.
Here is a thread on the "official" TechnoTrend forum regarding this issue.
dvbshop24.com - The network for PC-TV! - Problems with CT-3650-CI - Forum and Support dvbshop24.com
Also, this problem only happens using the 18.104.22.168 driver AFAIK. If you use the latest driver (22.214.171.124), you are can't tune to any encoded channel, but this is an issue with the driver, as it doesn't work with DVBViewer either.