So for the granny 2.8 how can i upgrade my models?? I really need help on this ..

Each time the tag got incremented, a breaking change to the format was made. So simply changing the tag won't help you. You need to actually upgrade/downgrade your models.

Kind Regards,
Tim

I really need to fix that stupid runtime error , can you fix it for me for money ? I changed the runtime tag to 37 but i still get errors.

Depends on what causes your runtime error.
If it's Granny 3D related: maybe,
if not: how should it help then?

Kind Regards,
Tim

Just a question! If i use the new granny2.dll 2.8 and use the bulkconverter.exe to convert all my files will the runtime error be fixed? I get random runtime errors and sometimes failures on loading the textures. Please answer!