I always have problems with the rrenarrator, rremicrophone and rrecanvas externals

My configuration is
OSX 10.7.2, LiveCode 5.0.0,Xcode 4.2.1, LiveCodeSDK-R10
They work on the simulator but i have an error message when i build the standalone for IOS
In fact there is not a file "binaries/rrenarrator-5_0.lcext""1 Could not find suitable build of lcext 'binaries/rrenarrator-5_0.lcext' for device"
My folder binaries contains 2 files:
rrenarrator-5_0.dylib
rrenarrator.lcext
This is the same with rremicrophone and rrecanvas
Best regards
Jean-Marc