You kept the bitcoin transaction fee schedule (0.0001 transaction fee) which is not appropriate for a such a rare coin. Also, your github sources need cleaning due to; checked in binary files, no .gitignore, no history, no forking.
Please consider revising these numbers:
/** Fees smaller than this (in satoshi) are considered zero fee (for transaction creation) */
int64 CTransaction::nMinTxFee = 10000; // Override with -mintxfee
/** Fees smaller than this (in satoshi) are considered zero fee (for relaying) */
int64 CTransaction::nMinRelayTxFee = 10000;
Also Mac wallet here:
https://s3.amazonaws.com/captemulation/dmg/PI-Qt.dmgModifications for Mac build:
https://github.com/picoind/pi/pull/2