It looks like it is being produced by some component of the HP software for your printer/scanner/multi-function device. (All
launchd jobs are identified by a label, which is generally a reverse-DNS formatted string of the developer (see CFBundleIdentifier for more info). In this case, it's hp.com).
Okay, after a google search of that bundle identifier, I came across this PhotoSmart C4280 repeating error messages in system.log thread in HP's forums.
Basically, the reason for the issue is whoever wrote the HP software not really understanding how to implement a
launchd LaunchAgent properly.
I wrote an AppleScript script to help automate the process of unloading the old launchd job, updating the plist file, and loading the new job:
HP com.hp.help.tocgenerator Helper.app (.zip file, ~29 KB)
Here's the code if you're interested:
if existsFile(":Library:LaunchAgents:com.hp.help.tocgenerator.plist") then
set plistFileContentsString to (do shell script "/bin/cat /Library/LaunchAgents/com.hp.help.tocgenerator.plist")
if (plistFileContentsString contains "LaunchOnlyOnce") then
display alert "It looks like your \"com.hp.help.tocgenerator.plist\"
has already been helped." buttons "Quit" default button "Quit"
set ourPlistPath to POSIX path of (path to resource "com.hp.help.tocgenerator.plist")
do shell script "/bin/launchctl unload /Library/LaunchAgents/com.hp.help.tocgenerator.plist;
/bin/rm -f /Library/LaunchAgents/com.hp.help.tocgenerator.plist;
/usr/bin/ditto --noqtn " &
quoted form of ourPlistPath &
/usr/sbin/chown 0:0 /Library/LaunchAgents/com.hp.help.tocgenerator.plist;
/bin/launchctl load /Library/LaunchAgents/com.hp.help.tocgenerator.plist"
with administrator privileges
display alert "Sorry, you don't appear to have the applicable
HP software installed." buttons "Quit" default button "Quit"
You should be able to run that AppleScript to alleviate the issue.