Paste: 1JwdKyvy1xTGUNV7ypPBi9eUGYoFGwo31h
this is not a valid bitcoin address because of invalid checksum. you can not send bitcoin to this address.
my funds haven't been moved, they're just sitting there.
how? are you sure you pasted the address which currently has your funds here correctly?
I've synced half a dozen clients and light wallets before learning to use the claimer.py script.
it is my guess but maybe it is a bug in that script that is making new and possibly invalid addresses like this.