Bob Marino said:
As annoying as it is, a torn systainer insert, is just hat - a torn insert; the tool is safe and sound. Fairly brittle plastic (or whatever the material is) has little give to it; I think the answer would be to have some rubber (or whatever the material) added to the systainer mixture to add some flexibility.
Bob
Hi Bob
Sure I agree that an insert with a tear or split would be nothing to get worried about just ask nicely for a replacement. But the OP said that his was "crushed and split" and I think you would agree that, that suggests the shipment has been subjected to an excessive amount of mishandling. Festool UK has a poor reputation for customer service :-[ and should not be allowed to just shrug off something like this as normal. From everything I have heard the will if they can

So this should not be let slip.
Were this in the US I would not suggest such an aggressive stance as Festool US has a good record of not being "jobsworth" people and going beyond the limits of the contract, acting in the spirit of the guarantees.
I hope that the US attitude will spread.