Rednet - passing a table from client to client - question (still crashing)

rednet.send(ID, {"Z","some message", anothervariable})

elseif message == "repeat" then	   -- turtle is listening for a message, "repeat" is sent by terminal
i = 1
	repeat
	rednet.send(ID, {"Z","Going to site", i})	  -- send message with progress update, Z denotes category, then message, then the iteration it is currently doing
	aware.goto(site)									-- go to site (defined elsewhere, works fine when i take out all the messaging stuff)
	shell.run("Excavate2 ", "9")				  -- dig dig dig
	rednet.send(ID, {"Z","Going home", i})
	aware.gohome()
	aware.turnleft()
	aware.dump()
	aware.turnright()
	site[3] = site[3]-5
	i = i + 1
	until i > 3

info = "repeat"  -- turtle is expecting this input. works ok.
rednet.send(ID, info)
i = 1
	repeat
	local ID, ackmsg = rednet.receive()		   -- store return message as "ackmsg"
	category = ackmsg[1]							  -- take 1st element of table in "ackmsg" and store as "category"
	if category == "Z" then							-- if right category, print it, if wrong, ignore it
	print(ackmsg)
	i = i + 1
	end
	until i > 6   										   -- do it 6 times
	print("Done")	
	sleep(7)

local ackmsg = textutils.serialize({os.getComputerID(), "Z", "Going to Site", i})
    rednet.send(id, ackmsg)

local ID, ackmsg = rednet.receive()
    local fackmsg = textutils.unserialize(ackmsg)
    local turtID = fackmsg[1]
    local category = fackmsg[2]
    local data = fackmsg[3]

textutils:143: textutils:141: [string "serialize"]:1: <'eof>' expected

elseif message == "repeat" then -- follow on from if statement further up in code, ignore for now
	i = 1							  -- set loop counter
	repeat						   -- start loop
	local ackmsg = textutils.serialize({os.getComputerID(), "Z", "Going to Site", i})	-- put the table between the () into a string with labels, and put it in the variable 'ackmsg'
	rednet.send(id, ackmsg)		   -- send it out
	aware.goto(site)		 -- go to site
	local ackmsg = textutils.serialize({os.getComputerID(), "Z", "Starting Dig", i})	  -- repeat as above...
	rednet.send(id, ackmsg)
	shell.run("Excavate2 ", "9")
	local ackmsg = textutils.serialize({os.getComputerID(), "Z", "Going Home", i})
	rednet.send(id, ackmsg)
	aware.gohome()
	aware.turnleft()
	aware.dump()
	aware.turnright()
	site[3] = site[3]-5
	i = i + 1
	until i > 3

i = 1
	repeat	   -- start loop, counter set to 1
	local ID, ackmsg = rednet.receive()   -- store incoming id in "ID", and message in "ackmsg"
	local fackmsg = textutils.unserialize(ackmsg)   -- take the string from "ackmsg" and put it in the table "fackmsg" (formatted ackmsg)
	local turtID = fackmsg[1]		 -- read the first table element, and store it as turtID
	local category = fackmsg[2]	-- store 2nd element as category
	local data = fackmsg[3]		   -- store 3rd as message
	if category == "Z" then	 -- if the category matches "Z"
	print(data)			-- print the data, which should read "Going to Site" or as appropriate
	i = i + 1		-- increment the loop conter.. etc
	else
	end
	until i > 9	
	print("Done")  

all of the receiving code, etc would be up here ^
local TABLENAME = {}
table.insert(TABLENAME,YOURMSGVARIABLE)

to split the string into a table:

function pattern(text,pattern,start)
return string.sub(text,string.find(text,pattern,start)) end

function split(string)
local sep = {}
local done = false
local count,prevVars,tmp = 0,0,0
string = string..",|"
while not done do
  count = count + 1
  tmp = pattern(string,"[^,]+",count+prevVars)
  if tmp == "|" then done = true return sep end
  prevVars = prevVars + tmp:len()
  table.insert(sep,count,tmp)
end
return sep
end

tTable = split(sString) -- to split the string

======================================================================

To turn the table into a string again

local num = table.maxn(tTable)
local sString = tTable[1]
local a = num - 1
local b = 2
for x=1, a do
   sString = sString..","..tTable[b]
   b = b + 1
end

if message == "report" then
rednet.send(id, "Site: "..textutils.serialize(site))

rednet.send(id, "Report: "..textutils.serialize(yourDataVariable))

while true do
  local id, msg = rednet.receive()
  if id == trustedId then -- optional check for sender id
    local sData = string.match(msg, "Report: (.+)")
    if sData then
	  -- the message is correct and contains data
	  local data = textutils.unserialize(sData)
	  -- now do whatever you need with the data
    end
  end
end