I installed WRP and then installed WMX. I thought everything was working fine, however with a lot of weapons the textures are completely messed up. I tried using the patch that the author of WMX made to work with WRP but I had no success. Any help would be appriciated. Thanks.

Are you using WMXUE? If yes, then be sure to download the assets (meshes and textures) from the separate patch for WRP under "Optional Files", and extract them to your data folder.