// a bunch of data, that is not destroyed until everything else here is out of scope
	int numEqs = //...
	int numVars = //...
	double *colLowerBounds = //...
	double *colUpperBounds = //...
	double *rowLowerBounds = //...
	double *rowUpperBounds = //...
	double *objective = //...

	CoinPackedMatrix matrix(false,0,0);
	matrix.setDimensions(0, numVars);

	for (int i = 0; i < numEqs; i++) // 
	{
		CoinPackedVector row;
		
		//... add stuff to the row with several insert() calls here

		matrix.appendRow(row);
	}

	ClpSimplex model;
	model.loadProblem(matrix, colLowerBounds, colUpperBounds, objective, rowLowerBounds, rowUpperBounds);

	// here's the mysterious fix:
	model.writeMps(TempFileName,1);
	model.readMps(TempFileName);
	// end fix

	ClpSolve solve;
	model.initialSolve(solve); // crashes in here almost all the time without the mysterious fix, works 100% with it