Dice roller issues

Ran a game the other night, and I was having weird dice issues all night. The roller was generating numbers outside of the range of the actual dice themselves, and at times was even rolling extra ones. Here is one example from the chat log: rolling 1d20!! + 2 ( 35 ) +2 =  37 Another one: rolling 8d20!! ( 16 + 19 + 7 + 10 + 28 + 8 + 12 + 14 ) And not just d20s: rolling 2d4!! + 2 ( 7 + 2 ) +2 =  11 rolling 2d4!! + 2 ( 7 + 1 ) +2 =  10 I think it might have accidentally rolled an extra die, and added them together, thus allowing the values above the normal die range.

If you are using the exploding dice mechanic "!" or compounding exploding dice "!!", additional dice can be rolled.  If you don't need exploding dice, do not use the exclamation mark in your macro.  Were your commands entered directly into chat or rolled from the dice tool?

This is correct. You are using the Compounding Dice syntax. From the wiki Dice Reference entry : Compounding Dice (B,F)  !!CP Shadowrun (and some other systems, such as 7th Sea and L5R) use a special style of exploding dice where the the additional rolls for each dice are added together as a single "roll". To do this, just use two exclamation marks instead of one. With the compounding exploding rolls a single roll can be infinitely high! The Compare Point can be specified to change the exploding trigger. Example Compounding Dice 5d6!!  - Rolls 5d6 and compound every time a 6 is rolled 5d6!!5  - Rolls 5d6 and compound every time a 5 is rolled, 6's will be treated as a normal roll So the "out of range" results you are seeing are dice which have rolled a natural maximum, and are adding another roll to that die result.