BeOpt crashes when optimizing PV and roof options [closed]

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Please help.
BeOpt stops after 10-15 points are plotted (see TDV plot). Have to clear options to try running again. Have to restart BeOpt sometimes. I am using 10 min steps (thermal mass options are included but not changed) and stopping and Net Zero E. See attached file, last case (1-5-20)

Also, not sure why the PV line in the Site E chart is above & sometimes below the total site E amount in different runs. I have sized PV to be just above Total Site E, plus a few bigger size options.

TIA, Tom