[launchd-dev] Having issue with launchAgents

[Arjun SM]

Hi all,
  I have created a custom Menulet  which i have made it as a launchAgent .
The problem i am facing is after installation if i logout and login again my
Menulet doesn't come up at all.
I checked the Console.log for more information on it and gave me following
error messages which i am not understanding.

22/01/09 11:47:22 AM Menulet[2941] kCGErrorInvalidConnection :
CGSGetWindowBounds: Invalid connection
22/01/09 11:47:22 AM Menulet[2941] kCGErrorCannotComplete :
CGSDeviceGetGeometry: Invalid device window
22/01/09 11:47:22 AM Menulet[2941] kCGErrorCannotComplete :
CGSDeviceGetGeometry: Invalid device window
22/01/09 11:47:22 AM Menulet[2941] kCGErrorInvalidConnection :
CGSGetWindowGeometry: Invalid connection
22/01/09 11:47:22 AM Menulet[2941] kCGErrorInvalidConnection :
CGSGetWindowGeometry: Invalid connection
22/01/09 11:47:22 AM Menulet[2941] kCGErrorInvalidConnection :
CGSGetWindowGeometry: Invalid connection
22/01/09 11:47:22 AM Menulet[2941] kCGErrorInvalidConnection :
CGSGetWindowGeometry: Invalid connection
22/01/09 11:47:22 AM Menulet[2941] kCGErrorCannotComplete :
CGSDeviceGetGeometry: Invalid device window
22/01/09 11:47:22 AM Menulet[2941] kCGErrorCannotComplete :
CGSDeviceSynchronize: Invalid device window

I was wondering if it has anything to do with my plist which i have
installed in /Library/LaunchAgents/com.myself.menulet.plist

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "
http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>Disabled</key>
    <false/>
    <key>KeepAlive</key>
    <true/>
    <key>Label</key>
    <string>com.myself.menulet</string>
    <key>ProgramArguments</key>
    <array>
        <string>/Library/Application
Support/Applications/Menulet.app/Contents/MacOS/Menulet</string>
    </array>
    <key>QueueDirectories</key>
    <array/>
    <key>RunAtLoad</key>
    <true/>
</dict>
</plist>

should i add any other key to this plist.
i did go through this technical document  and decided not to add
"LimitLoadtoSessionType" since by default Aqua is selected.

http://developer.apple.com/technotes/tn2005/tn2083.html#SECWINDOWSERVERLIFECYCLE

Please help
~Arjun
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