Im having a slight problem getting the detpack model to change to a different model. Funny thing is ive been able to do it in one of my other project but I cant seem to get it to change now. Here is what my odf's look like:

imp_weap_inf_detpack imp_weap_inf_detpack_ord And the parent class odf
com_weap_inf_detpack com_weap_inf_detpack_ord I even added it to my ingame.req Also ive added the updated lvl files(common,ingame ect) back to the munged folder in my addon just incase those didnt carry over correctly. Still no dice. I know im missing something, any advice would be much appreciated.

weap_inf_protoncharge

Is my new model, however I still get the vanilla model ingame.

Your ODFs look correct, so try replacing the stock DetPack model with the Thermal Detonator model.
If the Thermal Detonator model works, its a good bet that your model is not being accepted by the game.
Also, check the log for any errors

I just checked the log files to, no mention of the detpack or anything pertianing to it. I went ahead and changed the odf to read the thermal detonator model and still the problem persists. This is really strange.

Could a clean/manual clean and re-munge get it to work? I generally do that whenever something doesn't work... kind of like turning it off and then back on

Yes, this is strange.

I'd say try cleaning, like Oceans14 suggests.

If that doesn't work, try deleting all ODF files related to the DetPack, and start over.

Ive done the manuel clean, deleting and re-doing the odfs and a variety of other things yet the game persists to allude me. I even added odf's from my other project that has the detpack model changed along with the new detpack model from that odf. At this point it looks like the game wants me to stick with the vanilla model, which isnt too terrible but still kinda disapointing.

I feel like I have had this sort of problem before, but I can't remember exactly what it was or how I fixed it.

Assuming that the rest of the mod (it's not just the DetPack, right) is working correctly, suppose you tried the model on something else, like the time bomb. Or, another idea is to rename the stock model to something else, and rename the custom model to what the stock DetPack model was.

I suppose the last option is to reinstall the game; if no success then, reinstall the mod tools(backing up your progress of course).

Too bad we can't seem to find the solution to this problem. I'm sure this problem has been and will be encountered; it would be nice if someone could figure out how to fix it NOT the hard way.

Maybe you could try to rename your model the detpack model and delete the old detpack model. Clean and munge.