This happens if you have an iPhone indie license, with beta license which is pro this doesn’t happen. One question do you have “tools” with lightmapping or occlusion culling in the menu? Because these are only available for Pro. With my Indy license I still see those but shouldn’t I guess.
Yes – this is a known issue with the current build of 3.0 for all Unity iPhone Basic licensees… when I received my access to the beta this morning, it had a big warning message about this very issue from Samantha at Unity QA.
Shame. Well, there are other cheaper solutions to lightmapping if ones project is on a hobby-level, but it would have been nice to try their integrated version - seems really neato