Visualization problems on Mandrake 10 platform

Problems can be reproduced with:

station: zex
wok: wok-m10
workbench : KAS:dev:rh10

Problem description:

Exeption is appears during try to display AIS object in 3D Viewer:

AIS trihedron

vinit
vtrihedron tri
*Exception*

AIS dimension

vinit
OCC301 50 50 0 5
OCC301 50 30 0 3
vtop
*Exception*
vfit
*Exception*

Regressions have been reproduced on the following cases:
-----------------------------------------------------
chl 901 A8: BUC60915

chl 901 A9: BUC60818;

chl 902 F8: BUC60574;

chl 913 E2: BUC60814;

BUC... J5: vtrihedron tri;

chl 902 S5 : BUC60851
-----------------------------------------------------

chl 928 Q8: vtop - ** Exception ** - Engle Dimension