Take a look at posts 192/193 - it's a setting in the standard zen cart that adds a 3 unit tare weight to all shipping ('tare' is an allowance for the weight of the box/crate/packaging). It causes so many questions in the forums that it should really be set to zero in the standard zen distro.When i put the item weight as 0.1 in the new items page, everything is fine, on the shipping estimator it also says o.1kg, but when it gives the options it adds 3kg, this happens always, even if i change items weight it adds 3kg.
Try that first and then report back - eg. large letter only goes up to 750g, and 2nd class packet only goes up to 1kg, so you may find the problems are different once you take the '3' off the tare. Although you should also be able to remove that '... can't be determined...' message, and there may still be a tweak necessary for the special delivery 9am.
It's 1.46am here now and we've been out with friends this evening, so I'm leaving that bit until tomorrow when I'm more awake ...![]()
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