Studiomdl Frustration

I'm currently attempting to compile my first model, and every time it runs through Studiomdl it gets up to processing the phys model and then I'll get a lovely system error letting me know Studiomdl has encountered a problem and needs to close. I've rewritten the QC, and even used a GUI-interface QC/Studiomdl tool and it always seems to get the same error.

Here's my QC. Any ideas?

// Output .MDL
$modelname rm_rail1.mdl

//Location of textures in the materials folder
$cdmaterials models/rm_rail
$staticprop // Remove this line for a prop_physics object
$scale 1.0

// Whole body
$body studio "rm_rail1.smd"

// Sequences: all sequences are in $cd
$sequence idle "rm_rail1_idle" loop fps 15
$collisionmodel "rm_rail1_phys.smd"

My model and it's associated file are in sourcesdk_content/hl2mp/modelsrc/ and my materials are in sourcesdk_content/hl2mp/materialsrc/models and in half-life 2 deathmatch/hl2mp/materials.

Er, after a while of searching around and messing with my model, I got it to work by messing with the texturing - But now, it seems that it's only compiling two parts of the model and not the entire thing - Any ideas?