Or just use direct link to powerpack's official page: http://forum.openos.pl/resources/file/229 And yeah, you can (or even should) install only the latest version, 0.3.1.
-rwxrwxrwx 1 bigbob bigbob 9189996 2013-06-15 22:38:24.715305000 +0200 PowerPack_0.2.1.zip -rwxrwxrwx 1 bigbob bigbob 12124156 2013-07-12 05:50:00.945676000 +0200 PowerPack_0.3.0.zip -rwxrwxrwx 1 bigbob bigbob 12124346 2013-08-16 11:24:17.959113000 +0200 PowerPack_0.3.1.zip
bigbob@bigbob-UX31A:~/Vrac$ unzip PowerPack_0.3.1.zip Archive: PowerPack_0.3.1.zip error [PowerPack_0.3.1.zip]: missing 43852 bytes in zipfile (attempting to process anyway) error [PowerPack_0.3.1.zip]: attempt to seek before beginning of zipfile (please check that you have transferred or created the zipfile in the appropriate BINARY mode and that you have compiled UnZip properly) (attempting to re-compensate) creating: PowerPack_0.3.1/ inflating: PowerPack_0.3.1/applauncherd-invoker_3.0.3+0m8_armel.deb error: invalid compressed data to inflate file #3: bad zipfile offset (local header sig): 22052 (attempting to re-compensate) error [PowerPack_0.3.1.zip]: attempt to seek before beginning of zipfile (please check that you have transferred or created the zipfile in the appropriate BINARY mode and that you have compiled UnZip properly) file #4: bad zipfile offset (local header sig): 154918 file #5: bad zipfile offset (local header sig): 177894 file #6: bad zipfile offset (local header sig): 190901 file #7: bad zipfile offset (local header sig): 412006 file #8: bad zipfile offset (local header sig): 535122 file #9: bad zipfile offset (local header sig): 881158 file #10: bad zipfile offset (local header sig): 945971 file #11: bad zipfile offset (local header sig): 961142 file #12: bad zipfile offset (local header sig): 1148059 file #13: bad zipfile offset (local header sig): 1667996 file #14: bad zipfile offset (local header sig): 2460628 file #15: bad zipfile offset (local header sig): 2770874 file #16: bad zipfile offset (local header sig): 2877003 file #17: bad zipfile offset (local header sig): 3108849 file #18: bad zipfile offset (local header sig): 3167263 file #19: bad zipfile offset (local header sig): 4375363 file #20: bad zipfile offset (local header sig): 4618288 file #21: bad zipfile offset (local header sig): 4675193 file #22: bad zipfile offset (local header sig): 4763397 file #23: bad zipfile offset (local header sig): 5372939 file #24: bad zipfile offset (local header sig): 7081229 file #25: bad zipfile offset (local header sig): 7096305 file #26: bad zipfile offset (local header sig): 7748487 file #27: bad zipfile offset (local header sig): 8945456 file #28: bad zipfile offset (local header sig): 9055615 file #29: bad zipfile offset (local header sig): 9569914 file #30: bad zipfile offset (local header sig): 9700029 file #31: bad zipfile offset (local header sig): 10067266 file #32: bad zipfile offset (local header sig): 10295726 file #33: bad zipfile offset (local header sig): 10393504 file #34: bad zipfile offset (local header sig): 10394712 file #35: bad zipfile offset (local header sig): 10636184 file #36: bad zipfile offset (local header sig): 10969366 file #37: bad zipfile offset (local header sig): 11160947 file #38: bad zipfile offset (local header sig): 11990504 bigbob@bigbob-UX31A:~/Vrac$