CONTRACTS: can't make a transaction

[aglkm]

Wallet 1:

./target/release/grin-wallet --testnet contract new --send=1 --encrypt-for=tgrin1pj5wlv3nhvua5lgr72dq9ufu8aw2m05ke5z47j5463zvrgej54qsstc3rg
Password: 
--------------- SLATEPACK METADATA --------------

Slate encrypted: true
Slate finalized: false
Slate saved to file: /slatepack/3198ee9b-f033-4e6e-8699-19c9cb58f82d.S1.slatepack

-------------- CUT BELOW THIS LINE --------------

BEGINSLATEPACK. 3pDmAZBPAaFKxhX Hhi1beNF3pCpmpY ugZNstfhxHzQtrZ zA9HUtMTgbXmUa6 FHQAqRSa3U1fwbu D3iaiYSPLT1hjTE qGMm2rdsVyBofM6 cp6ZDe7Lm3bEm2b 7jmdrzGyfPSTNrL fWrceZbM7rKFo59 bST38KxMXginKca Y7JcQbrJoETKc2W WY6vNTWzfg9QJBt PyDUZhzmMP9KYWT ECjhaagFWtxxfKw pTPMUxgQX6kdbGx NnfuJavCv658VAR ka9upRnBD3ti5MP 27iXnvFYZEpgHJc 4UQF4PutVPdBt2r pXTQ3dRx4bAmDAk j4RG9Y4wMv2h5sc XTKHJP8pHVZGk9n vqeYQWNEK5reqUX rtK4oyA63wCmq9D r75BTjwPn9vdqma eeb9oazDpALNDCn XtguxrSwoPn7coM iCUdCvGKeigZ3rw SokXdb7x8L6x7Ej 3QimTEkg9DoJFe6 FJsEGG5dFQMfzBK 9nEHGvaLt5c2MT3 MBd1FMi9p1fMGmm r7B7bNCMMqpZm6c 7Vfc4F7T4AFRyvF WFbgzGJsafYvfNq oLfZ4vfBquVBaW3 DFsKRBMXnvaA1xy n2L1MqziRyEzGSU BRtmt4xeU3jFtZY HnhsdryC5TdiTV3 i1G6pN6mhJdCXvW nbc51S4HV4gspJJ 3Tw7k2GTt8B4hHC 4Ms93g93PkA2SDZ P19zYouaeerg6iT ScxPXuiZXbC2pZ. ENDSLATEPACK.

-------------- CUT ABOVE THIS LINE --------------
Command 'contract' completed successfully

Wallet 2:

./grin-wallet --testnet contract sign --receive=1
Password: 
Paste slatepack:
BEGINSLATEPACK. 3pDmAZBPAaFKxhX Hhi1beNF3pCpmpY ugZNstfhxHzQtrZ zA9HUtMTgbXmUa6 FHQAqRSa3U1fwbu D3iaiYSPLT1hjTE qGMm2rdsVyBofM6 cp6ZDe7Lm3bEm2b 7jmdrzGyfPSTNrL fWrceZbM7rKFo59 bST38KxMXginKca Y7JcQbrJoETKc2W WY6vNTWzfg9QJBt PyDUZhzmMP9KYWT ECjhaagFWtxxfKw pTPMUxgQX6kdbGx NnfuJavCv658VAR ka9upRnBD3ti5MP 27iXnvFYZEpgHJc 4UQF4PutVPdBt2r pXTQ3dRx4bAmDAk j4RG9Y4wMv2h5sc XTKHJP8pHVZGk9n vqeYQWNEK5reqUX rtK4oyA63wCmq9D r75BTjwPn9vdqma eeb9oazDpALNDCn XtguxrSwoPn7coM iCUdCvGKeigZ3rw SokXdb7x8L6x7Ej 3QimTEkg9DoJFe6 FJsEGG5dFQMfzBK 9nEHGvaLt5c2MT3 MBd1FMi9p1fMGmm r7B7bNCMMqpZm6c 7Vfc4F7T4AFRyvF WFbgzGJsafYvfNq oLfZ4vfBquVBaW3 DFsKRBMXnvaA1xy n2L1MqziRyEzGSU BRtmt4xeU3jFtZY HnhsdryC5TdiTV3 i1G6pN6mhJdCXvW nbc51S4HV4gspJJ 3Tw7k2GTt8B4hHC 4Ms93g93PkA2SDZ P19zYouaeerg6iT ScxPXuiZXbC2pZ. ENDSLATEPACK.
Wallet command failed: LibWallet Error: Sender address has not been provided

Same if you use --encrypt-for=:

./grin-wallet --testnet contract sign --receive=1 --encrypt-for=tgrin1wvcfnnsf63qj27yfumukrte7nyyszndcnl4d36crg0yk0dftct3qur8d4t
Password: 
Paste slatepack:
BEGINSLATEPACK. 3pDmAZBPAaFKxhX Hhi1beNF3pCpmpY ugZNstfhxHzQtrZ zA9HUtMTgbXmUa6 FHQAqRSa3U1fwbu D3iaiYSPLT1hjTE qGMm2rdsVyBofM6 cp6ZDe7Lm3bEm2b 7jmdrzGyfPSTNrL fWrceZbM7rKFo59 bST38KxMXginKca Y7JcQbrJoETKc2W WY6vNTWzfg9QJBt PyDUZhzmMP9KYWT ECjhaagFWtxxfKw pTPMUxgQX6kdbGx NnfuJavCv658VAR ka9upRnBD3ti5MP 27iXnvFYZEpgHJc 4UQF4PutVPdBt2r pXTQ3dRx4bAmDAk j4RG9Y4wMv2h5sc XTKHJP8pHVZGk9n vqeYQWNEK5reqUX rtK4oyA63wCmq9D r75BTjwPn9vdqma eeb9oazDpALNDCn XtguxrSwoPn7coM iCUdCvGKeigZ3rw SokXdb7x8L6x7Ej 3QimTEkg9DoJFe6 FJsEGG5dFQMfzBK 9nEHGvaLt5c2MT3 MBd1FMi9p1fMGmm r7B7bNCMMqpZm6c 7Vfc4F7T4AFRyvF WFbgzGJsafYvfNq oLfZ4vfBquVBaW3 DFsKRBMXnvaA1xy n2L1MqziRyEzGSU BRtmt4xeU3jFtZY HnhsdryC5TdiTV3 i1G6pN6mhJdCXvW nbc51S4HV4gspJJ 3Tw7k2GTt8B4hHC 4Ms93g93PkA2SDZ P19zYouaeerg6iT ScxPXuiZXbC2pZ. ENDSLATEPACK.
Wallet command failed: LibWallet Error: Sender address has not been provided

[yeastplume]

Thanks, I'll look at this over the next little while