Standalone still refuses to launch on Mavericks

[jbv at souslelogo.com]

Hi guys,

One of my clients still has problems trying to launch a standalone
on Mavericks.
The standalone is named "Saisie" and has been built on 10.5.8 with
LC 6.5.0 rc6 for Mac Intel only. The standalone runs perfectly on 10.5.8.
Originally the preopenstack handler contained references to a file &
folder on disk, but I have removed this handler.
On the client's Mac GateKeeper is set to "everywhere". The standalone
is not signed.

Below is an example of the errors displayed in Console when trying to
launch the app.
Does anyone have any idea of what can be the cause of the problem ?

Thanks in advance.
jbv


21/11/2013 16:50:41,198 com.apple.launchd.peruser.501[153]:
(com..saisie.66384[83599]) Job failed to exec(3) for weird reason: 13
21/11/2013 16:50:41,275 loginwindow[42]: ERROR | -[Application
setAppContext:] |
Unable to get PID for context [0,70075088]
21/11/2013 16:50:41,288 Dock[189]: no information back from LS about
running process
LSASN:{hi=0x0;lo=0x42d42d0}
21/11/2013 16:50:41,297 Finder[196]: 8837325: Attempting to SIGCONT to pid
#83599
failed, with errno=#3, or the process failed to actually start
21/11/2013 16:50:41,308 Finder[196]: 8837325: Attempting to SIGCONT to pid
#83599
failed, with errno=#3, or the process failed to actually start