Just be sure you have the latest SR's and patches installed. The latest one is Sr3.12.343r54.32 Oh, wait, it's 10:30am. The latest one is SR3.22.33.44 Oh, wait, it's 11:30am. The latest one is SR3.33.44.55 Oh, it's been a while since CL was releasing service packs every few hours, but still... The issues that is still unresolved is why P5 works fine for some people, but not for others. If you want to take the gamble and try it on your computer, you may be happy. Or, it may crash every time you use it and you'll be in the "Why am I such a sucker for buying this?" camp. Personally, unless you REALLY, REALLY need the advanced features of P5, you should stick with P4/ Pro Pack. In fact, if you're a Lightwave or Vue user, stick with Pro Pack- there is NO similar import/export feature in P5 yet... CL said that this will be sold separately, later,,, possibly as "P5 Pro Pack".