[BUG] Hard Crash to Desktop on 'Scroller' Block in Intermission definition

[FDinolfo]

GZDoom version

GZDoom 4.14.0 Release

Which game are you running with GZDoom?

Other

What Operating System are you using?

None

Please describe your specific OS version

Windows 11 Pro X64 24H2

Relevant hardware info

Core i5 12600K, 32GB RAM, RTX 3060 Ti

Have you checked that no other similar issue already exists?

• I have searched and not found similar issues.

A clear and concise description of what the bug is.

I am creating a custom ending sequence using the Intermission definition in ZMAPINFO. I tried to add a scroller block, and discovered that though GZDoom will load with it, when the Intermission plays and it reaches that block, GZDoom crashes to desktop.Below is the beginning of the Intermission def.

`Map MDTEST "Test Map" {
LevelNum = 99
Cluster = 2
Next = endsequence, "DSEnd"
}

Intermission DSEnd
{
TextScreen
{
Background = "TSATURN"
Music = "EXITLEVL"

	Time = 15
	Position = 1, 1

	Text =
	"This is some text that will be displayed",
	" ",
	" on the screen."
}
Scroller
{
	InitialDelay = -1
}
Cast
{
	CastClass = "Agathodemon"
	CastName = "Agathodemon"
	AttackSound = "Melee", 0, "caco/melee"
	AttackSound = "Missile", 1, "caco/active"
}

}
`

CrashReport.zip
ini.zip

Steps to reproduce the behaviour.

Explain how to reproduce

1. Create a test map with an exit.
2. Set up ZMAPINFO to point to the correct custom sequence
3. Load the map and flip the switch to exit.

Your configuration

No response

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