so if i dont export it as an .xsi then wat do i export it as? ive never heard of .xsiftk b4. mshex only does .xsi files i thought.

It does .xsi, aka .xsiftk. Same thing.

UUUUGGGGGGHHHHHHHHHHH!!!!!!!!!!!!!!!!!!!!!!!! i did wat u said and when i open my model in 3d Object Converter v4.2 it says it cannot open it still!!!!!!!!!!!!!!! I DID EVERYTHING U SAID AND IT STILL WONT WORK!!!!!!!!!!!!!!!!!!!!! IM SICK OF THIS. here is wat i did: i exported my exp file as a obj then imported the obj form and gave it texture and selected all the objects (the dummyroot too 1st) and used crosswalk and exported it as .xsi file and used mshex beta 3 and then opened it in 3d Object Converter v4.2 and it said unrecognized or unsupported file type! (or no valid object found!) can u plz post the working jet here? and give step by step instructions on how u got it working PPPPLLLZZZZ. that would be great! thx

Ok, first take a moment to calm down.

Once you've done that, answer this question: how did you go about selecting the dummyroot?

Also, take a screenshot of your export settings and your XSI Explorer view (set to Objects only with dummyroot opened).

wat do u mean how did i select the dummyroot? i just renamed the any_fly_jet_exp null into dummyroot. here r the pics u wanted.

You said you downloaded Rep's MshEx. Did you even read the instructions? A quick glance shows me that your Crosswalk export settings are way off the mark.

o oops. sry. i c my probs now. ill try those and hopefully itll work. thx

EDIT
it still wont work! here is pic of export 2 xsi. this is after i had exported 2 obj and then imported obj. is there a special thing i need 2 uncheck or check when i export as obj?

You have quite a lot of objects there, I'm not sure what the limit for MshEx is. Try merging a few. It looks ok otherwise.

I'll upload it myself and see if you set up the model correctly.

ill post the current version of it. i did merge all the objects together and name it harrier. can i delete all the other objects since its all merged into harrier? ugh it wont let me. the file is 2 big 2 post here even after zipping. do u have xfire? if so i could send it 2 u then and u could give me live help. my xfire is jangorules

After merging the objects (making sure you clicked both merge buttons - one for shapes and one for texture) yes, you can right click on the merged object and select "Freeze Generator and Delete Inputs".

do u think thats my prob, too many objects? is there a proper setting when i export 2 obj?

Look, it could be that - .....ah, it's hard to explain. And I gtg soon, anyway, to see that new Comet Lulin in the eastern sky.

But do you still have the copy that you had before exporting it into a .obj? If so, try converting that one.

actually i found way 2 compress it more using 7z. well i cant seem 2 get my models working so i guess ill just quit modelling and stick with modding and making maps. unless some1 wants 2 get this jet working.