Preview Pool Registration Error

[mcvetyty]

Describe the bug I am attempting to register a pool through cntools on preview network, and once I supply all of the prompted information, it attempts to submit the registration transaction but this error displays:

# Pool Registration Transaction
./cntools.library: line 2405: ${tx.signed}: bad substitution
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100   601    0   601    0     0    856      0 --:--:-- --:--:-- --:--:--   856
{"contents":{"contents":["DecoderErrorDeserialiseFailure \"Shelley Tx\" (DeserialiseFailure 0 \"end of input\")","DecoderErrorDeserialiseFailure \"Shelley Tx\" (DeserialiseFailure 0 \"end of input\")","DecoderErrorDeserialiseFailure \"Shelley Tx\" (DeserialiseFailure 0 \"end of input\")","DecoderErrorDeserialiseFailure \"Shelley Tx\" (DeserialiseFailure 0 \"end of input\")","DecoderErrorDeserialiseFailure \"Shelley Tx\" (DeserialiseFailure 0 \"end of input\")","DecoderErrorDeserialiseFailure \"Shelley Tx\" (DeserialiseFailure 0 \"end of input\")"],"tag":"TxCmdTxReadError"},"tag":"TxSubmitFail"}
Waiting for new block to be created (timeout = 600 slots, 600s)
INFO: press any key to cancel and return (won't stop transaction)
WARN: Balance mismatch, transaction not included in latest block... waiting for next block!
WARN: Balance mismatch, transaction not included in latest block... waiting for next block!
WARN: Balance mismatch, transaction not included in latest block... waiting for next block!
WARN: Balance mismatch, transaction not included in latest block... waiting for next block!
WARN: Balance mismatch, transaction not included in latest block... waiting for next block!
WARN: Balance mismatch, transaction not included in latest block... waiting for next block!

And it never completes.

Version:

• OS: Ubuntu 20.04
• Product version: CNTools v12.1.0 - Preview
• Cardano Node version: cardano-node 9.1.1 - linux-x86_64 - ghc-8.10 git rev efd560070aaf042d1eb4680ae37fc607c7742319
• Network you're connecting to: preview