172,173c172,173
< 			int rowOffset = evaluateIntArg(args[1], srcCellRow, srcCellCol);
< 			int columnOffset = evaluateIntArg(args[2], srcCellRow, srcCellCol);
---
> 			int rowOffset = (args[1] instanceof MissingArgEval) ? 0 : evaluateIntArg(args[1], srcCellRow, srcCellCol);
> 			int columnOffset = (args[2] instanceof MissingArgEval) ? 0 : evaluateIntArg(args[2], srcCellRow, srcCellCol);