On a Windows 10 workstation
"version" : "1.0.2",
"nodeversion" : 10002901,
"protocolversion" : 10009,
...
c:\temp\multichain>multichain-cli MyCoin_Test listunspent 0 100 '["1CXotAhZ7iqFeSo2dRxdqe7SuRKDYBomUwkn73"]'
error: Error parsing JSON:'[1CXotAhZ7iqFeSo2dRxdqe7SuRKDYBomUwkn73]'
If I write:
c:\temp\multichain>multichain-cli MyCoin_Test listunspent 0 100 '[\"1CXotAhZ7iqFeSo2dRxdqe7SuRKDYBomUwkn73\"]'
error: Error parsing JSON:'["1CXotAhZ7iqFeSo2dRxdqe7SuRKDYBomUwkn73"]'
I get no problems with the same version under Ubuntu 16.04, works fine there..