Why does game crash when i cancel mcv building?

[None]

QUICK_EDIT Attach signature (signatures can be changed in profile) close

So im trying to make the player be able to build his mcv without training a vehicle.
But when someone tries to unhold and as soon as you right click it to cancel the building process it immediately crash why?

Code:

[GACNST]
Crewed=no
Immune=yes
Cost=3000
Owner=British,French,Germans,Americans,Alliance
BuildCat=Tech
TechLevel=2
Insignificant=no
Prerequisite=none

[NACNST]
Crewed=no
Immune=yes
Cost=3000
Owner=Russians,Confederation,Africans,Arabs
BuildCat=Tech
TechLevel=2
Insignificant=no
Prerequisite=none

[YACNST]
Cost=3000
Owner=YuriCountry
BuildCat=Tech
TechLevel=2
Insignificant=no
Prerequisite=none
Immune=yes
Crewed=no

[Graion Dilach]

QUICK_EDIT Attach signature (signatures can be changed in profile) close

Because this is how the game is - https://www.modenc.renegadeprojects.com/Internal_Error/YR#eip_0064003C

Use Ares, it's fixed there - http://ares-developers.github.io/Ares-docs/bugfixes/type2/buildableconstructionyards.html

_________________
"If you didn't get angry and mad and frustrated, that means you don't care about the end result, and are doing something wrong." - Greg Kroah-Hartman
=======================
Past C&C projects: Attacque Supérior (2010-2019); Valiant Shades (2019-2021)
=======================
WeiDU mods: Random Graion Tweaks | Graion's Soundsets
Maintainance: Extra Expanded Enhanced Encounters! | BGEESpawn
Contributions: EE Fixpack | Enhanced Edition Trilogy | DSotSC (Trilogy) | UB_IWD | SotSC & a lot more...

[Lin Kuei Ominae]

QUICK_EDIT Attach signature (signatures can be changed in profile) close

Is that the full code? Because then it's because nearly 60% of the code for a complete building is missing.

Otherwise, it might be because you are not using Ares.
http://ares-developers.github.io/Ares-docs/bugfixes/type2/buildableconstructionyards.html
Buildable conyards caused a crash when canceled ever since Tiberian Sun. Ares fixed that.

_________________
SHP Artist of Twisted Insurrection:  Nod buildings

Public SHPs
X-Mech Calendar (28 Mechs for GDI and Nod)
5 GDI, 5 Nod, 1 Mutant, 1 Scrin unit, 1 GDI building

Tools
Image Shaper______TMP Shop______C&C Executable Modifier

[None]

QUICK_EDIT Attach signature (signatures can be changed in profile) close

Would Ares effect my game? or while playing the map online with other people?
If not how do i use it?

[TAK02]

QUICK_EDIT Attach signature (signatures can be changed in profile) close

https://ppmforums.com/viewtopic.php?p=566977#566977

I'm unaware of MP shenanigans, but I'd say Ares and vanilla MP don't mix too well. Ares itself might even prevent that from happening.
Or maybe it improves the MP experience for everyone involved