Okay, just got a mac mini and accidentally delete all the iwork trial stuff off of it, now when I try to install iwork disc purchased it's not allowing me to saying that I have an updated version on my harddrive and shows my harddrive picture with a stop sign saying "you cannot install iwork on this volume. A newer version of this software already exists on this volume." Although mac's support site says to just enter the code on the trial version after pressing buy. Although I no longer have the trial version, yet it says I still do when i try to install the disc. What do I do if I can't open the trial version, nor can I install it from the disc due to this restriction, please help! Thank you in advance too 