Don't crash when block values are invalid
Don't crash when block values are invalid

illblew/TrueCraft,manio143/TrueCraft,SirCmpwn/TrueCraft,manio143/TrueCraft,flibitijibibo/TrueCraft,thdtjsdn/TrueCraft,robinkanters/TrueCraft,flibitijibibo/TrueCraft,blha303/TrueCraft,thdtjsdn/TrueCraft,flibitijibibo/TrueCraft,thdtjsdn/TrueCraft,Mitch528/TrueCraft,SirCmpwn/TrueCraft,manio143/TrueCraft,christopherbauer/TrueCraft,robinkanters/TrueCraft,Mitch528/TrueCraft,robinkanters/TrueCraft,blha303/TrueCraft,blha303/TrueCraft,illblew/TrueCraft,SirCmpwn/TrueCraft,illblew/TrueCraft,Mitch528/TrueCraft,christopherbauer/TrueCraft,christopherbauer/TrueCraft