I got the same problem, however i may have a bit of trouble if i have too many triangles or vertices

Compiling with Crowbar 0.33.0.0: "C:\Users\TrinTiger\Downloads\R2D2_Enhanced (SFM)\models\ptejack\robots\R2\decompiled 0.33" (folder + subfolders) ...

Compiling ".\r2d2_enhanced.qc" ...
qdir: "c:\users\trintiger\downloads\r2d2_enhanced (sfm)\models\ptejack\robots\r2\decompiled 0.33\"
gamedir: "D:\Programs\Steam\steamapps\common\Half-Life 2\hl2\"
g_path: "r2d2_enhanced.qc"
Building binary model files...
Working on "r2d2_enhanced.qc"
SMD MODEL r2d2_enhanced_reference.smd
VTA MODEL r2d2_enhanced.vta
SMD MODEL r2d2_enhanced_body_vents.smd
SMD MODEL r2d2_enhanced_hatch_door.smd
SMD MODEL r2d2_enhanced_head.smd
SMD MODEL r2d2_enhanced_head_lenses.smd
SMD MODEL r2d2_enhanced_head_vents.smd
SMD MODEL r2d2_enhanced_jetpack_l.smd
SMD MODEL r2d2_enhanced_jetpack_r.smd
SMD MODEL r2d2_enhanced_leg_f.smd
SMD MODEL r2d2_enhanced_leg_foot_l.smd
SMD MODEL r2d2_enhanced_leg_foot_r.smd
SMD MODEL r2d2_enhanced_leg_l.smd
SMD MODEL r2d2_enhanced_leg_r.smd
SMD MODEL r2d2_enhanced_tools_body.smd
SMD MODEL r2d2_enhanced_tools_chest.smd
SMD MODEL r2d2_enhanced_tools_head_arms.smd
SMD MODEL r2d2_enhanced_tools_lightsaber.smd
SMD MODEL r2d2_enhanced_tools_radar.smd
SMD MODEL r2d2_enhanced_anims\Idle.smd
SMD MODEL r2d2_enhanced_anims\Jets_Deploy.smd
SMD MODEL r2d2_enhanced_anims\Jets_Close.smd
SMD MODEL r2d2_enhanced_anims\FLeg_Deploy.smd
SMD MODEL r2d2_enhanced_anims\FLeg_Retract.smd
SMD MODEL r2d2_enhanced_anims\FLeg_Deploy2.smd
SMD MODEL r2d2_enhanced_anims\FLeg_Retract2.smd
Max flex verts 2926
---------------------
writing D:\Programs\Steam\steamapps\common\Half-Life 2\hl2\models/ptejack\robots\r2\r2d2_enhanced.mdl:
bones 29804 bytes (122)
animation x y ips angle
@Idle 0.00 0.00 : 1.#J ( 90.00) 0.0
@Jets_Deploy 0.00 0.00 : 0.00 ( 90.00) 2.0
@Jets_Close 0.00 0.00 : 0.00 ( 90.00) 2.0
@FLeg_Deploy 0.00 0.00 : 0.00 ( 90.00) 2.0
@FLeg_Retract 0.00 0.00 : 0.00 ( 90.00) 2.0
@FLeg_Deploy2 0.00 0.00 : 0.00 ( 90.00) 2.0
@FLeg_Retract2 0.00 0.00 : 0.00 ( 90.00) 2.0
animations 4640 bytes (7 anims) (295 frames) [0:13]
sequences 2000 bytes (7 seq)
ik/pose 3216 bytes
eyeballs 0 bytes (0 eyeballs)
flexes 62396 bytes (6 flexes)
eyeballs 0 bytes (0 eyeballs)
flexes 0 bytes (6 flexes)
eyeballs 0 bytes (0 eyeballs)
flexes 0 bytes (6 flexes)
eyeballs 0 bytes (0 eyeballs)
flexes 0 bytes (6 flexes)
eyeballs 0 bytes (0 eyeballs)
flexes 0 bytes (6 flexes)
eyeballs 0 bytes (0 eyeballs)
flexes 0 bytes (6 flexes)
eyeballs 0 bytes (0 eyeballs)
flexes 0 bytes (6 flexes)
eyeballs 0 bytes (0 eyeballs)
flexes 0 bytes (6 flexes)
eyeballs 0 bytes (0 eyeballs)
flexes 0 bytes (6 flexes)
eyeballs 0 bytes (0 eyeballs)
flexes 0 bytes (6 flexes)
eyeballs 0 bytes (0 eyeballs)
flexes 0 bytes (6 flexes)
eyeballs 0 bytes (0 eyeballs)
flexes 0 bytes (6 flexes)
eyeballs 0 bytes (0 eyeballs)
flexes 0 bytes (6 flexes)
eyeballs 0 bytes (0 eyeballs)
flexes 0 bytes (6 flexes)
eyeballs 0 bytes (0 eyeballs)
flexes 0 bytes (6 flexes)
eyeballs 0 bytes (0 eyeballs)
flexes 0 bytes (6 flexes)
eyeballs 0 bytes (0 eyeballs)
flexes 0 bytes (6 flexes)
eyeballs 0 bytes (0 eyeballs)
flexes 0 bytes (6 flexes)
textures 1492 bytes
keyvalues 0 bytes
bone transforms 16656 bytes
bone flex driver 0 bytes
collision 0 bytes
total 125740
---------------------
writing D:\Programs\Steam\steamapps\common\Half-Life 2\hl2\models/ptejack\robots\r2\r2d2_enhanced.vvd:
vertices 486240 bytes (10130 vertices)
vertices 973776 bytes (20287 vertices)
vertices 410256 bytes (8547 vertices)
vertices 489120 bytes (10190 vertices)
vertices 334368 bytes (6966 vertices)
vertices 378144 bytes (7878 vertices)
vertices 243984 bytes (5083 vertices)
vertices 243504 bytes (5073 vertices)
vertices 496080 bytes (10335 vertices)
vertices 838656 bytes (17472 vertices)
vertices 839328 bytes (17486 vertices)
vertices 682800 bytes (14225 vertices)
vertices 711072 bytes (14814 vertices)
vertices 905424 bytes (18863 vertices)
ERROR: 'EXCEPTION_ACCESS_VIOLATION' (assert: 1)
ERROR: Aborted Processing on 'ptejack\robots\r2\r2d2_enhanced.mdl'
... Compiling ".\r2d2_enhanced.qc" finished. Check above for any errors.

18863 vertices -_- Can someone please help