blue skreen with comodo firewall

hi too all
sorry for bad english
i am using comodo firewall on win windows 8.1 X64 since version 6.3 till 7.0.317799.4142 and do not have any problem
but when i instaling windows 8.1 spring update comodo firewall cuase blue screen on my system after 2 minutes
i chek latest version of comodo in windows 8.1 soring update but it cuase blue screen

2- comodo firewall block avira website - why ???