Cabel-0.85 Csound 5.05
The Pfields UDO doesn't recognize p4 and p5 instrument parameters when executing an exported csd file on a score.
The problem is that p4 and p5 don't show up in the instrument definition so are undefined for the instrument. Therefore p4 and p5 are local to the Pfields opcode block and have undefined values.
Two possible fixes:
1) Pass p4 and p5 to Pfields
2) Assign p4 and p5 to dummy variables in the instrument declaration.