Labview executable only works for about ten seconds before shutting down

Question

Hi,
I'm not a newbie to LabVIEW but I am a newbie to creating executables and installers using LV. On my first attempts I'm having a strange problem that I cannot resolve. I already began discussing this problem on another thread, but I was advised to start a new one.
I've made a variety of VI's but for debugging purposes I made the simplest VI possible: just some plain text on the front panel, no code on the block diagram.
I created a project with just that VI, compiled an executable, compiled an installer, and sent the installation files to my colleague. I use a Win XP machine and so does he. He does not have LV installed.
The installation goes fine, the VI starts up, appears to run fine and then spontaneously quits (i.e. the window closes and disappears) after twelve seconds with no error message.This happens even if I create a VI with a loop. The VI executable, installed via the installer on my WinXP PC (which has the full LV application) does not replicate this problem. It occurs only on a WinXP machine where LV is not installed.
version info: LabVIEW 2010
My debugging ideas going forward are:
- try to play with the "Source File Settings --> Use default save settings" checkboxes, as suggested by another user in another thread.
- ask another colleague with WinXP and no LV to test the VI's, to see if the problem is somehow linked with my first colleague's machine.
- to check the Windows Event Log (following the advice of user Norbert on this forum), but I'm not sure if I'll be able to decipher what I read in there. A first look has turned up nothing interesting.
- am pretty stuck for ideas after that.
Thanking you in advance for any input you can give,
Garrett

Answer 1

Issue solved: the anti-virus was forcing the application to shutdown.
Bit of a newbie problem 
I discovered the problem when I tried the executable on another colleague's PC. When the exe was launched, the anti-virus software (Avast!) showed a pop-up that said it was verifying the unknown program and then after about 12 seconds it shut it down. It then proposed to open the program in either the "sandbox" or "as normal" the next time. By choosing "normal" the VI worked fine the next time.
It turns out that on my first colleague's PC, he also had Avast! software, except that on his PC it was running in some sort of hidden background mode. This meant that it didn't display any pop-up messages to indicate that it was interfering with the VI. Once we manually launched the Avast! interface, it finally proposed the option of opening the VI in the sandbox or normally.
All works fine now. I hope this helps other newbies out there.