P4SCC issue: Configuration of package into p4scc failing

[Mekugi]

Using EA 12.0, I am trying to configure a package into version control using P4SCC.

- The Version Control settings look ok
- The Version Control and XMI Filename in the Package Control Options dialog look ok
- The P4SCC popup to select the location in the depot is ok (overlays are being used)
- The file is properly marked for addition in the Perforce pending changelist

But the file is not submitted and the configuration fails with a popup reading "File was not added".
Unfortunately, there are no traces in System Output window.

What is puzzling is that the file is actually in the Perforce changelist, so it shows that the configuration is not completely wrong.
Does anyone know of a way to investigate (e.g. increase log verbosity or find logs anywhere else)?

[Mekugi]

There is a settings file to activate P4SCC logs in ~/.p4scc, but it looks like EA (or maybe P4SCC itself) is systematically rewriting the file with "LogFile=no" 

[Mekugi]

Found workaround for ~/.p4scc: setting the file in read-only mode allows to get some traces:

• add -f package.xml
  package.xml #1 - opened for add
• fstat -Olhp
  {1 additional argument(s) suppressed}
• edit package.xml
  package.xml - can't edit (already opened for add)
• fstat -Olhp
  {1 additional argument(s) suppressed}

Unfortunately, the output of fstat is not logged.

It looks like the submit command is not sent.