Solar radiation calc crashes

Hi guys i am new to grasshopper and ladybug
after watching hours of tutorials, i built a solar radiation study for two versions of one building and ran some calculations which gave great results. the architect requested some slight changes so i redefined the geometry and context breps and ran the calc again. now the radiation calc crashes every time i run it.
i have no idea what could be causing the problem. would love any help. migdal merom design guideline.gh (445.3 KB)
thanks in advance,
sareet

Did you check the units. Grid size is depended on working units you are working with

thanks for the suggestion. turns out i had misdefined some breps