[SSE] Crash when deleting multiple items from Footstep Set

[seanfagan]

I'm on Windows 10, CKPE V0.4 Build 944, working with Skyrim Special Edition.

If I open a footstep set, highlight multiple items, and try to delete them all at once, CKPE crashes.

ASSERTION: Invalid index passed to operator[] (e:\_skyrimhd\code\gamesln\bscore\bstarray.inl line 500)

====== CRASH INFO ======
Exception:
	Code: C0000005
	Address: 000000014198DB46
	Message: The thread tried to read from or write to a virtual address for which it does not have the appropriate access.

Context:
	RAX	000000091B84C5C8
	RBX	00000000007A0EF8
	RCX	0000000142FCF048
	RDX	00000000FFFFFFF4
	RBP	00000000000014CF
	RSP	000000000014C230
	RSI	000000000014DCB8
	RDI	000000000000004E

	R8	00000000006B9561
	R9	000000000000000C
	R10	00000000006D8CF8
	R11	0000000000000000
	R12	CBF29CE484222325
	R13	00000000007A0EF8
	R14	000000000014DCB8
	R15	00000100000001B3

	RIP	000000014198DB46

	RFlags	00010206
	ZF	0	PF	1	AF	0
	OF	0	SF	0	DF	0
	CF	0	TF	0	IF	1

	LastError	000000B7

	GS	002B	FS	0053
	ES	002B	DS	002B
	CS	0033	SS	002B

	XMM0	45535341	4F495452	49203A4E	6C61766E
	XMM1	6D61675C	6E6C7365	6373625C	5C65726F
	XMM2	00000000	00000000	00000000	00000000
	XMM3	FFFFFFFF	FFFFFFFF	FFFFFFFF	FFFFFFFF
	XMM4	FFFFFFFF	FFFFFFFF	FFFFFFFF	FFFFFFFF
	XMM5	73625C6E	65726F63	7473625C	61727261
	XMM6	00000000	00000000	00000000	00000000
	XMM7	00000000	00000000	00000000	00000000
	XMM8	00000000	00000000	00000000	00000000
	XMM9	00000000	00000000	00000000	00000000
	XMM10	00000000	00000000	00000000	00000000
	XMM11	00000000	00000000	00000000	00000000
	XMM12	00000000	00000000	00000000	00000000
	XMM13	00000000	00000000	00000000	00000000
	XMM14	00000000	00000000	00000000	00000000
	XMM15	00000000	00000000	00000000	00000000