So this is what I think you mean, still doesn't generate HKN errors but doesn't broadcast either, and the space bar on the second PC still kills WoW

Code:
//================================================================
// SAMPLE SCRIPT FOR TWO WOW'S ON TWO PC'S
// (one account on each machine)
//
// Instructions: Copy this entire script (all the blue writing
// on gray background including comments). Save it in a file. 
// Load it into HotkeyNet.
//
// Toggle the scroll lock key to turn hotkeys off and on. (You 
// can change this if you want, just like you can change 
// everything else with HotkeyNet.) 
//
// Requires HotkeyNet build 147 or higher.
// 
// For more info, go to www.hotkeynet.com 
//================================================================


//-----------------------------------------------------------
// SUBROUTINE TO LAUNCH A COPY OF WOW.
//-----------------------------------------------------------
<Command Launch>
   <SendPC %1%> 
      <Run "c:\Program Files\World of Warcraft\WoW.exe">


//-----------------------------------------------------------
// PRESS CTRL R TO RENAME WOW'S IF YOU LAUNCH THEM MANUALLY 
//-----------------------------------------------------------
// Command version of the same function to rename all of the World of Warcraft Windows
<Command RenameAllWindows>
<SendPC local>
<RenameWin "World of Warcraft" WoWa>
<RenameWin "World of Warcraft" WoW1>
<SendPC 10.0.0.141>
<RenameWin "World of Warcraft" WoWb>
<RenameWin "World of Warcraft" WoW2>


//-----------------------------------------------------------
// DEFINE MAIL LABELS FOR SENDING KEY STROKES 
//-----------------------------------------------------------
<Label w1 Local SendWin "World of Warcraft" WoWa>
<Label w1 Local SendWin "World of Warcraft" WoW1>
<Label w2 10.0.0.141 SendWin "World of Warcraft" WoWb>
<Label w2 10.0.0.141 SendWin "World of Warcraft" WoW2>


//-----------------------------------------------------------
// DEFINE HOTKEYS FOR ALL KEY COMBINATIONS THAT WILL GET
// SENT TO BOTH WOWS. ADD MORE KEY COMBO'S IF YOU WANT. 
//-----------------------------------------------------------
<Hotkey ScrollLockOn A-Z, 0-9, Plus, Minus, F1-F12 except W, A, S, D, Q, E>
<PassThrough> 
<SendLabel w2>
<Key %Trigger%> 


//-----------------------------------------------------------
// DEFINE MOVEMENT KEYS THAT WILL GET SENT TO BOTH WOW'S.
// ADD MORE KEYS IF YOU WANT. 
//-----------------------------------------------------------
<MovementHotkey ScrollLockOn up, down, left, right>
<PassThrough> 
<SendLabel w2>
<Key %Trigger%> 


//-----------------------------------------------------------
// BROADCAST MOUSE CLICKS. REQUIRES ADJUSTMENT OF
// CLICKMOUSE DELAYS ON SETTINGS PANEL. HOLD DOWN OEM3 
// (ON U.S. KEYBOARDS, THAT'S THE SQUIGGLE KEY IN UPPPER 
// LEFT CORNER) WHEN YOU WANT TO BROADCAST.
//-----------------------------------------------------------
<UseKeyAsModifier Oem3> 


<Hotkey ScrollLockOn Oem3 LButton, MButton, RButton, Button4, Button5>
   <PassThrough> 
   <SendLabel w2> 
      <ClickMouse %TriggerMainKey%>