This the error …

Error code: SIGNATURE_INVALID
Error message: 
Command: /usr/bin/pkgcmd -i -q -t wgt -p “/opt/usr/apps/tmp/testuicomponentssample.wgt”
Management: Check author certificates in Preferences > Tizen SDK > Secure Profiles > Profile items.

I went to Preferences -> Tizen SDK -> Security Profiles and hit Generate in the Author Certificate section. Is there anything else I’m missing?

EDIT: Console output …

Launching the Tizen application…
# If you want to see the detailed information,
# please set the logging level to DEBUG in Preferences and check the log file in ‘C:\tizen-sdk-data\ide\logs/ide-20151019_222930.log’.

[Initializing the launch environment…]
    RDS: On
    Target information: SM-R720
    Application information: Id(3abSiyzHs4.testuicomponentssample), Package Name(3abSiyzHs4), Project Name(testuicomponentssample)
[Transferring the package…]
    Transferred the package: wgt stream -> /opt/usr/apps/tmp/testuicomponentssample.wgt
[Installing the package…]
path is /opt/usr/apps/tmp/testuicomponentssample.wgt
start process (install)
….
error : 22

end process (fail)
processing result : SIGNATURE_INVALID [22] failed
spend time for pkgcmd is [261342]ms
cmd_ret:22
[Transferring the package…]
    Transferred the package: wgt stream -> /opt/usr/apps/tmp/testuicomponentssample.wgt
path is /opt/usr/apps/tmp/testuicomponentssample.wgt
start process (install)
….
error : 22

end process (fail)
processing result : SIGNATURE_INVALID [22] failed
spend time for pkgcmd is [2949]ms
cmd_ret:22
Unexpected stop progress…
(298.77 sec)