Welcome to INTEL forum. Basically, error is related to the un-supported feature for DE0 board. The DE0 Board belong to Terasic. It would be better if you could contact Terasic for enquiry related to Terasic board. https://www.terasic.com.tw/cgi-bin/page/archive.pl?Language=English&CategoryNo=12&No=20
We would like to apologize, and we deeply regret the unpleasant experience that you have encountered. As mentions DE0_CV Control Panel and related board support belong to Terasic and it is best to refer back to Terasic team regarding this issue. Thanks and your understanding is highly appreciated.