New Three20 Build-Error

i just upgraded my Project to the newest Three20 Build. When compiling i get following errors:

Undefined symbols:
  "___restore_vfp_d8_d15_regs", referenced from:
  +[TTEntityTables(TTSingleton) sharedInstance] in libThree20Core.a(TTEntityTables.o)
  +[TTEntityTables(TTSingleton) releaseSharedInstance] in libThree20Core.a(TTEntityTables.o)
  +[TTEntityTables(TTSingleton) allocWithZone开发者_StackOverflow社区:] in libThree20Core.a(TTEntityTables.o)
  "___save_vfp_d8_d15_regs", referenced from:
  +[TTEntityTables(TTSingleton) sharedInstance] in libThree20Core.a(TTEntityTables.o)
  +[TTEntityTables(TTSingleton) releaseSharedInstance] in libThree20Core.a(TTEntityTables.o)
  +[TTEntityTables(TTSingleton) allocWithZone:] in libThree20Core.a(TTEntityTables.o)
ld: symbol(s) not found
collect2: ld returned 1 exit status

Anybody with an idea what happened here?

Thanks in advance, Lukas