Undefined symbols for architecture armv7: "_$F"

[stadia]

this errors in building CoreResource
"_$F", referenced from:
-[CoreTableController controllerDidChangeContent:] in CoreTableController.o
ld: symbol(s) not found for architecture armv7
collect2: ld returned 1 exit status

"_$F", referenced from:
-[CoreTableController controllerDidChangeContent:] in CoreTableController.o
ld: symbol(s) not found for architecture armv6
collect2: ld returned 1 exit status

so modify source
from 140 line in CoreTableController.m
self.tableReloadDelay = $F(defaultTableReloadDelay);
to
self.tableReloadDelay = [NSNumber numberWithFloat:defaultTableReloadDelay];