that's correct - some files were deleted and other files added
to avoid trouble you should delete all previous pyprp files, and install only the new ones.
if there are still missing files, then it's a sign that updating an eroneous zip-file when you wake up for a short while at 4AM is not a good idea either
One day I ran through the cleft for the fiftieth time, and found that uru held no peace for me anymore.