gravity load, vector components. A bug maybe?

[rmettier]

I'm trying to model some viscoelastic deformation under gravity load. I'm using an explicit dynamic timestep. The units I'm using are kilometers and years, so 1 standard gravity comes to 9.75e12 km/a^2.

If I used SI units and provide the vecotr components of the define gravity load a (0 / -9.81), the model runs fine. If I however provide the correct values (0 / -9.75E12), I get the following error message:

THE VECTOR COMPONENTS OF THE GRAVITY LOAD HAVE NOT BEEN GIVEN

Have any of you encountered anything like this before? And how can I get around this?

ABACUS (CAE) running on XP.
Any help is greatly appreciated.

 

[rmettier]

Edit: forgot to mention: Any gravity vector up to -1e9 seems to be fine. -2e9 already shows the weird error.