Sorry for the previous problem--corporate email is such a pain sometimes.
Any ways, I am writing a simple Lua coverage script to gauge the coverage of my 
Lua source code.  I have found that it works fairly well when I have a 
simple test file that executes without
 coroutines.  When I run the same tool against more complex code that 
has coroutines I find the sethook callbacks ends.  Is there a way to use
 sethook that will work across coroutines without modifying my original 
source code?  I'd prefer not to modify the
 code I am profiling.  Or is there anyway to get this to work?
Basically the code does the following:
> lua lcov.lua main.lua
lcov.lua:
...
local f = assert( loadfile(fileToExec) ) -- execute main.lua
debug.sethook(covHandler, "l" )
f()   -- run the main program
(I've also tried just: dofile( fileToExec ) for what it's worth)
main.lua does the following:
function calledInt( fmt, ... )
    local msg = string.format(fmt, unpack(arg))
    print("calledInt: "..msg)
end
local function main()
    calledInt("Value: %d", 0)
end
local co = coroutine.create( main )
coroutine.resume( co )
Once the coroutine starts my sethook callback (covHandler) is no longer 
hit.  I see no callbacks for calls inside of "calledInt()".  Any help or
 suggestions would be MUCH appreciated.
Tysen