Hi,
I'm also having the same problem on a Vu+ Solo SE receiver. HbbTV was working fine last week. After some recent update it stopped working. I found en error.log under /usr/local/hbb-browser/home, here is the latest error message. I don't know if it can help. It might be related with the missing URL.
--- 18 Nov 2015 20:33:29 --- file://localhost/usr/local/hbb-browser/root/directfb-ui/navWindow.html Unknown thread Uncaught exception: ReferenceError: Undefined variable: urlChange Error thrown at line 1, column 0 in program code: urlChange('file://localhost/usr/local/hbb-browser/root/directfb-ui/navWindow.html'); --- 18 Nov 2015 20:33:29 --- file://localhost/usr/local/hbb-browser/root/directfb-ui/navWindow.html Unknown thread Uncaught exception: ReferenceError: Undefined variable: setNavigation Error thrown at line 1, column 0 in program code: setNavigation(false, false); --- 18 Nov 2015 20:33:29 --- file://localhost/usr/local/hbb-browser/root/directfb-ui/navWindow.html Unknown thread Uncaught exception: ReferenceError: Undefined variable: loadingStart Error thrown at line 1, column 0 in program code: loadingStart(); --- 18 Nov 2015 20:33:29 --- file://localhost/usr/local/hbb-browser/root/directfb-ui/navWindow.html Unknown thread Uncaught exception: ReferenceError: Undefined variable: urlChange Error thrown at line 1, column 0 in program code: urlChange('file://localhost/usr/local/hbb-browser/root/directfb-ui/navWindow.html'); --- 18 Nov 2015 20:33:29 --- file://localhost/usr/local/hbb-browser/root/directfb-ui/navWindow.html Unknown thread Uncaught exception: ReferenceError: Undefined variable: setNavigation Error thrown at line 1, column 0 in program code: setNavigation(false, false);