The three weapons you listed are indeed fixed in the meshes I've uploaded. If you're still crashing then you haven't properly installed the meshes, simple as that.
The NifSE.log is in your Oblivion folder. However this isn't going to provide much information I don't think. I'm fairly confident it will show the exact same errors we initially had with the early testing where it crashes when trying to delete the child. And the meshes will still report v0.4 even with the fixed meshes. It comes down to properly placing the updated, fixed, meshes. Either way you should still post the NifSE.log for us to look over.
Well I've gone and redownloaded the files you posted and put the meshes into my data folder three times now and still no luck. Sorry for being a bother, here is my NifSE log after a crash.
NifSE v1.00 b:2 a:f
query
load
oblivion root = c:\program files (x86)\steam\steamapps\common\oblivion\
List of BSA files: (excluding BSA files known to contain non-NIF data)
c:\program files (x86)\steam\steamapps\common\oblivion\Data\DLCBattlehornCastle.bsa
c:\program files (x86)\steam\steamapps\common\oblivion\Data\DLCFrostcrag.bsa
c:\program files (x86)\steam\steamapps\common\oblivion\Data\DLCHorseArmor.bsa
c:\program files (x86)\steam\steamapps\common\oblivion\Data\DLCOrrery.bsa
c:\program files (x86)\steam\steamapps\common\oblivion\Data\DLCShiveringIsles - Meshes.bsa
c:\program files (x86)\steam\steamapps\common\oblivion\Data\DLCThievesDen.bsa
c:\program files (x86)\steam\steamapps\common\oblivion\Data\DLCVileLair.bsa
c:\program files (x86)\steam\steamapps\common\oblivion\Data\Knights.bsa
c:\program files (x86)\steam\steamapps\common\oblivion\Data\Oblivion - Meshes.bsa
c:\program files (x86)\steam\steamapps\common\oblivion\Data\xulAspenWood.bsa
c:\program files (x86)\steam\steamapps\common\oblivion\Data\xulSkingradOutskirts.bsa
11 total.
Listening to OBSE dispatches.
Registering String Interface.
Setting Serialization callbacks.
Initializing NifSE Hooks.
Initialization complete.
Game loaded: Creating ni\ directory.
NifLoad - Clearing previous RegList.
NifLoad - Load complete.
NifOpen - "Weapons\Iron\WarAxe.NIF" opened for editing.
NifFile c'tor - NifFile created for editing.
NifFile.loadNif - Loading "Weapons\Iron\WarAxe.NIF"!
CheckFileLocation - File "Weapons\Iron\WarAxe.NIF" found in BSA!
WriteNifToStream - Successfully read nif data in BSA "c:\program files (x86)\steam\steamapps\common\oblivion\Data\Oblivion - Meshes.bsa". Buffer length is 49928.
NifFile.loadNif - Nif is good; v20.0.0.4. Loaded 20 blocks.
NifFile.reg - Registering "Weapons\Iron\WarAxe.NIF" on RegList.
NifFile.reg - Registered as #53-0.
NifOpen - "Weapons\Iron\WarAxe.NIF" registered as #53-0.
NifGetNumBlocks - Getting the number of blocks in nif #53-0
NifFile::getRegNif - Nif #53-0 found.
NifGetNumBlocks - Returning 20.
NiNodeGetChildByName - Getting the index of Child "Scb" of nif #53-0 block #0.
NifFile::getRegNif - Nif #53-0 found.
NiNodeGetChildByName - Child not found.
NiNodeGetChildByName - Getting the index of Child "Scb" of nif #53-0 block #1.
NifFile::getRegNif - Nif #53-0 found.
NiNodeGetChildByName - Not NiNode.
NiNodeGetChildByName - Getting the index of Child "Scb" of nif #53-0 block #2.
NifFile::getRegNif - Nif #53-0 found.
NiNodeGetChildByName - Not NiNode.
NiNodeGetChildByName - Getting the index of Child "Scb" of nif #53-0 block #3.
NifFile::getRegNif - Nif #53-0 found.
NiNodeGetChildByName - Not NiNode.
NiNodeGetChildByName - Getting the index of Child "Scb" of nif #53-0 block #4.
NifFile::getRegNif - Nif #53-0 found.
NiNodeGetChildByName - Not NiNode.
NiNodeGetChildByName - Getting the index of Child "Scb" of nif #53-0 block #5.
NifFile::getRegNif - Nif #53-0 found.
NiNodeGetChildByName - Not NiNode.
NiNodeGetChildByName - Getting the index of Child "Scb" of nif #53-0 block #6.
NifFile::getRegNif - Nif #53-0 found.
NiNodeGetChildByName - Not NiNode.
NiNodeGetChildByName - Getting the index of Child "Scb" of nif #53-0 block #7.
NifFile::getRegNif - Nif #53-0 found.
NiNodeGetChildByName - Not NiNode.
NiNodeGetChildByName - Getting the index of Child "Scb" of nif #53-0 block #8.
NifFile::getRegNif - Nif #53-0 found.
NiNodeGetChildByName - Not NiNode.
NiNodeGetChildByName - Getting the index of Child "Scb" of nif #53-0 block #9.
NifFile::getRegNif - Nif #53-0 found.
NiNodeGetChildByName - Not NiNode.
NiNodeGetChildByName - Getting the index of Child "Scb" of nif #53-0 block #10.
NifFile::getRegNif - Nif #53-0 found.
NiNodeGetChildByName - Not NiNode.
NiNodeGetChildByName - Getting the index of Child "Scb" of nif #53-0 block #11.
NifFile::getRegNif - Nif #53-0 found.
NiNodeGetChildByName - Not NiNode.
NiNodeGetChildByName - Getting the index of Child "Scb" of nif #53-0 block #12.
NifFile::getRegNif - Nif #53-0 found.
NiNodeGetChildByName - Not NiNode.
NiNodeGetChildByName - Getting the index of Child "Scb" of nif #53-0 block #13.
NifFile::getRegNif - Nif #53-0 found.
NiNodeGetChildByName - Not NiNode.
NiNodeGetChildByName - Getting the index of Child "Scb" of nif #53-0 block #14.
NifFile::getRegNif - Nif #53-0 found.
NiNodeGetChildByName - Not NiNode.
NiNodeGetChildByName - Getting the index of Child "Scb" of nif #53-0 block #15.
NifFile::getRegNif - Nif #53-0 found.
NiNodeGetChildByName - Not NiNode.
NiNodeGetChildByName - Getting the index of Child "Scb" of nif #53-0 block #16.
NifFile::getRegNif - Nif #53-0 found.
NiNodeGetChildByName - Not NiNode.
NiNodeGetChildByName - Getting the index of Child "Scb" of nif #53-0 block #17.
NifFile::getRegNif - Nif #53-0 found.
NiNodeGetChildByName - Not NiNode.
NiNodeGetChildByName - Getting the index of Child "Scb" of nif #53-0 block #18.
NifFile::getRegNif - Nif #53-0 found.
NiNodeGetChildByName - Not NiNode.
NiNodeGetChildByName - Getting the index of Child "Scb" of nif #53-0 block #19.
NifFile::getRegNif - Nif #53-0 found.
NiNodeGetChildByName - Not NiNode.
NifGetPath - Getting the path to nif #53-0
NifFile::getRegNif - Nif #53-0 found.
NifGetPath - Returning "ni\DeadlyReflex 6 - Combat Moves_0.nif".
CreateNifFile - FileFinder requesting nifScript file "Meshes\ni\DeadlyReflex 6 - Combat Moves_0.nif".
NifFile::getRefNif - Finding nif with filename "DeadlyReflex 6 - Combat Moves_0.nif".
NifFile::getRegNif - Nif #53-0 found.
NifFile.write - Writing to "ni\DeadlyReflex 6 - Combat Moves_0.nif".
CreateNifFile - Nif created.
DeleteNifFile - FileFinder has finished with nifScript file "ni\DeadlyReflex 6 - Combat Moves_0.nif".
NifFile::getRefNif - Finding nif with filename "DeadlyReflex 6 - Combat Moves_0.nif".
NifFile::getRegNif - Nif #53-0 found.
DeleteNifFile - Nif deleted.
NifOpen - "Weapons\Iron\LongSword.NIF" opened for editing.
NifFile c'tor - NifFile created for editing.
NifFile.loadNif - Loading "Weapons\Iron\LongSword.NIF"!
CheckFileLocation - File "Weapons\Iron\LongSword.NIF" found in BSA!
WriteNifToStream - Successfully read nif data in BSA "c:\program files (x86)\steam\steamapps\common\oblivion\Data\Oblivion - Meshes.bsa". Buffer length is 63559.
NifFile.loadNif - Nif is good; v20.0.0.4. Loaded 20 blocks.
NifFile.reg - Registering "Weapons\Iron\LongSword.NIF" on RegList.
NifFile.reg - Registered as #53-1.
NifOpen - "Weapons\Iron\LongSword.NIF" registered as #53-1.
NifGetNumBlocks - Getting the number of blocks in nif #53-1
NifFile::getRegNif - Nif #53-1 found.
NifGetNumBlocks - Returning 20.
NiNodeGetChildByName - Getting the index of Child "Scb" of nif #53-1 block #0.
NifFile::getRegNif - Nif #53-1 found.
NiNodeGetChildByName - Child found; returning 9.
NiNodeDeleteChild - Deleting Child (block #9) of nif #53-1 block #0.
NifFile::getRegNif - Nif #53-1 found.