Please reinput all data regarding changes. Alternately please check to ensure:
1. Modified model file is indeed in your mod directory usually under (drive):/games/quake/whateveryourmodiscalled/progs/ where whateveryourmodiscalled is the name of your mod folder and is preferably located in your quake folder.
2. Model file is being properly set in all code that sets the model in question as the model to use.
3. Ensure that either A. framemacros are defined in your file and are used or if no framemacros are used then B. ensure that animation is both defined properly and is called where it should be.
4. Ensure that your progs.dat is indeed compiling and is in the root of your mod folder.
5. Ensure you start your quake engine with the parameter -game whateveryourmodiscalled, where whateveryourmodiscalled is whatever the name of your mod directory is.
Thank you and have a safe and pleasant modding session.
Seriously though, we need more information than that.
(LordHavoc)