i got problems with my client after the update, i use autoupdate.exe to update all of the new files added. try to use that also to update your client. just click autoupdate.exe and wait until all files are downloaded.
@Nove1st, from what I see is that your game is not updated successfully. Run AutoUpdate.EXE from your InfinityMU Client Folder. Even tho all files are in the update your client doesn't have them. Don't cancel any update via mu.exe and let the game update next time.