"bad allocation" error in FDTD
I'm attempting to run a parameter sweep in FDTD, and even though the individual files of the sweep have run and display results, when I attempt to load the individual files into the sweep as a whole, I receive an error reading "bad allocation" and am entirely unable to view any results in the visualize window. The simulation gives this error loading in the 75th simulation and does not save any data to the sweep on the base file.
My simulation is a model of a gold nano-antenna on top of a thin film and a glass substrate. For the sweep we vary the length of the antenna from 50 to 200nm using 75 points in the range. Each simulation is about 6.5GB of memory and the mesh is non-uniform with a max step of 1nm. A few photos are attached.
Please let me know if I can provide any more details, we have no idea how to handle this error.