Comodo Dragon becomes Red after update from win 8 to win 8.1

After the update from win 8 to win 8.1 the Comodo Dragon Vers. 29.1.0.0 becomes red over all Internet-sites. Do You have held for this Problem?

Hi AndreasWoernle,
Try disabling Use hardware acceleration when available, found near the bottom of Dragons advanced settings under system.