LSynth : "Add comand..." not activated... : fixed

[Fabrice Vion]

For people who could have the same problem than I Had, here is the explalation and solution :

In fact Ldraw was installed to time on my computer. Lsynth was installed was only installed in one Ldraw file, but the other was the default program. So when I opend a .ldr file, the default Ldraw was opened and I couldn't use Lsynth.
I uninstalled the default program and declared the other one as the default Ldraw.

Thanks a lot to people who helped me to fix.

Fabrice