I'm have the same problem since Saturday afternoon (19 Nov 2011) I've experienced this problem many times before but usually the system is back online without problems. But this is the longest its been for us. Please note sometimes this can occur due to the the Recipients address too. Basically the address should be entered in basic english numerals and alphabet. Sometimes you find some customers using names of places, towns, cities with letters using symbols. Unfortunately Paypal does not recognize these and hence you can edit the address by removing the symbols and re-typing the name in plain english. This removes the error and you can continue processing the Postage Label. For the current issue im having with this error message this is not the case, the addresses are perfect....it seems to be a problem on PayPals side. I've tried 2 laptops and one home computer to print labels but its all the same....I don't know when Paypal will recognize that this payment system needs to be purely secured and functioning at all times....if it continues like this I may have to choose an alternative method since it deeply affects us.
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