Problems with Mk3 Fuel Tanks in VAB?

[THobson]

If in the VAB I start with an RC-L01

then a Mk3 liquid fuel tank

then 6x LT-2 landing struts

On launch if I activate the landing gear on the launch pad, some times but not always, (it seems to depend on where the landing struts are placed) there is vibration then an explosion and the vessel is destroyed.

I have not been able to replace this problem if the vessel is created in SPH.

Any ideas as to how to create a rocket with a Mk3 tank and 6x LT-2's?

Edited November 4, 2015 by THobson

[Capt-Coulson]

Are you 'clipping' any of the parts together? Is the weight of the entire assembly too much for the legs? Do you have any pictures of this set up so we can see what might be going wrong?

[A_name]

In my experience, shaking landing legs indicate they are close to breaking off due to bearing too much load. Under this reasoning, I would say use more legs or switch to a larger size. That being said, it doesn't make sense that the problem goes away if you launch from the SPH. Another thing that comes to mind is that the surface of the launchpad can sometimes be buggy, with parts getting stuck into it. Maybe that's the problem you're having. To test this, use the debug menu to hack gravity, fly your craft a little off the launchpad and then turn off hack gravity to land (or just use parachutes instead of hacking the gravity, whatever suits you best).

[THobson]

I looks like a bug on the launch pad. I hacked gravity flew is away, put full gravity back on and it worked fine.

Thanks