[Qt-creator] Could not run my app. "Command not found"

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Hi.
I run the 0.9.2 version on Linux

Built on Feb 5 2009 at 19:27:27
>From revision 4ef83082f6

and just got this message after pressing: CTRL+R

a console window with the text:

/bin/sh: : command not found
Press enter to close this window

I started QtCreator  from another directory than the one where the
application is.
The app is created and I can run it  with ./myapp
. is not in my $PATH

Any ideas on what can be wrong?