MacOS – Submitting job to launchd gives error “no plist returned”, “nothing found to load”

I'm writing my first launchd plist. When I try to load it with the following command:

$ launchctl load com.Test01.plist
  launchctl: no plist was returned for: com.Test01.plist nothing found to load

The plist is supposed to execute a shell command which writes the date to a file. The plist file follows. It is in ~/Library/LaunchdAgents.

The hardware is a MacBook Air 11 running OS X 10.8.4
Thanks for any comments.

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Aple//DTD PLIST 1.0//EN">
<plist version="1.0">
<dict>
    <key>label</key>
    <string>com.Test01</string>

    <key>ProgramArguments</key>
    <array>
            <string>/Users/cae/scripts/testcron.sh</string>
    </array>

    <key>RunAtLoad</key>
    <true/>

    <key>Nice</key>
    <integer>1</integer>

    <key>StartInterval</key>
    <integer>60</integer>

    <key>StandardErrorPath</key>
    <string>/Users/cae/tmp/Test01.err</string>

    <key>StandardOutPath</key>
    <string>/Users/cae/tmp/Test01.out</string>
</dict>
</plist>