I'm having really anoying issues too!
The game works perfectly fine and i'm very pleased with it. Cel stages works wonderful and as does the Creature Stage. However, once you've finished creature stage it tells u u can progress to the Tribal stage. So i click the button on the bottom right and then click the tick on the next screan. I make my final changes to my creature and click the tick button. The games freezes... no matter how long u leave it, nothing works! I did manage (somehow) to get it to start loading the tribal stage, I got to the screan where it says "You may experience..." and just as it's about to show some creatures, the game freezes and just sits there. The mouse has the "busy" icon and u can move it around, but that's not much fun when you've paid £40 for it!!
My laptop specifications are (taken from Window's review):
Windows Vista Home Premium
Service pack 1
Manufacturor: Dell
Model: Inspiron M1710
Rating: 4.7
Processor: Intel Core 2 CPU 2.33 GHz 2.33 GHz
RAM: 4.00GB
System Type: 32 Bit
Style: Laptop