TestNet Bug report,
PascalCoinWallet_TESTNET_5.Beta.1_Windows  and  PascalCoinWallet_TESTNET_5.Beta.2_Windows  have the same problem.

Miner sometimes doesn't work ,  debug，then  found RPC info "part1" length is 89 bytes, the general case is 90 bytes.

both wallet and miner are running on WIN7 X64.