Possibly related to "stack_scheme" in the affected objects tuning.
By default it's:
<E n="stack_scheme">Brooms_Magic</E> for brooms
<E n="stack_scheme">Wands_Magic</E> for wands
Didn't dig into it too much, just changed that to:
`<E n="stack_scheme">DEFINITION</E>`
for brooms and wands and it stopped crashing for me.
If that's correct then Star Wars collectibles might also be affected because they have a stack_scheme that's different from DEFINITION or NONE.
In case it matters:
I have all packs up to and including the Crystal Creations one (except the castles kit).
I'm on PC.
My update sequence was Crystal Creations patch > then e-patch > then pack install (over the last few days, as these came out)
Tested with mods disabled, cache cleared and a spellcaster sim that had a lot of collectibles in her inventory (including wands, brooms, familiars, crystals, etc) a couple of times. This sim was created prior to the first patch.
Then tested by enabling mods and testing with the modified tuning on the same sim.