This should be fixed now. The error was due to mistakenly adding a BigInteger and regular integer together e.g. BigInteger.valueOf(1000) + 1


Not really, more for just identifying the source of a transaction. For example Joric has a donation link in his sig. If I send him a payment he might not know where it has come from, Instead of PMing him or something I can just add a note note to the transaction e.g.