Defence+

hi, i was very pleased when I installed a new version of comodo firewall, but in fact immediately other program /boinc/ crashed several times, as it was not able to access svchost.exe(comodo´s proactive defence reported that it blocked more than 200 suspicious attempts so far.) i ve tried to add it to my own safe files but only thing that worked at all was disabling defence+. I would really like to use defence+ as well, has anybody some idea how to fix it?