It seems that in my project MXML code inspection for all Flex core components is completely broken in Maia M1, i.e. all core component attributes like "width", "height" etc. are red. When I open the exact same project in 8.1.3 everything is fine, so I reverted for now. Clearing the cache does not help. Anything stupid I overlooked? This is on OS-X 10.5.7, latest JDK 1.6_13 (with the 64-bit stub patch).
Thanks and Regards,