yeah, i always make that mistake, changed but still says the same thing, but i think it's something to do with the model, not that it's corrupt cos o2 can read it, but it just wont open ingame.
If you want i can give you a run down i what i did...i'll post later
here goes:
Modelled, UVWed and textured Using PS6 and Studio Max 6
Exported from there as a .3ds, preserving maxs texture co-ordinates
Imported into o2, and resized using ak47_proxy supplied with OFPanim
Deleted the AK47 and pointed my weapon towards it texture files
Selected the weapon and named the selection "zbran"
Created a new LOB called "memory", and placed the 4 vertices
(usti hlavne, konec hlavne, nabojnicestart, nabojniceend)
and selected all, and named the selection "zbran" also
Didn't make a zasleh as an MP5SD6 wouldn't need one
Saved it to it's folder (mp5sd6\mp5sd6.p3d) with textures in the aswell
Pointed Bresebs .cpp (from his tutorial) in there, pointing towards my weapon instead of his.
Saved that, Compiled it using stuffpbo
I go ingame, editor, civilian->stalker hunter (from the .cpp)
then i get the error "cannot open object mp5sd6\mp5sd6.p3d