Win 7 SP1 > Overbridge Control Panel crashes

hey there. Just tried to install overbridge v1.15 for Analog Heat (last OS is updated, overbridge mode is activated)
after installation (Win 7 64bit) process it’s not possible to run overbridge control panel. get instantly the windows message “overbridge control panel does’nt work anymore and will be closed”.
Tried to install at another PC (win 10) and all works fine. no ideas anymore…
Has anybody a idea where the error could be?