You might have replaced a wrong file, try this:
- Place back a default playerped.rpf (if you made a backup atleast, if not let me know and I'll send you one)
- Using SparkIV open up playerped.rpf
- Hit the big import button and select all the files that you've extracted from the rar
- Click 'save' and then exit SparkIV
Then see if it works properly ingame, SparkIV automaticly replaces all the files which is alot easier than having to right-click each one and selecting replace in OpenIV. The possiblity of replacing the wrong files in SparkIV is also non existent since it automaticly replaces the default files with the ones you've selected.