Quoted from hereHotFix 2 contains fixes for some common scenarios that result in corrupted materials and disconnected shader nodes in render trees. The Hotfix will prevent new corruption, but it doesn’t fix corrupted scenes or models. You will have to fix them one by one when possible.
Hotfix 2 for SP1 is available on the Updates & Service Packs page.
Hotfix 2 for the SAP apparently is (now) available (edit:) also, from the Subscription Center
;)Please make sure you install the right version of the hotfix: SP1 hotfix for Softimage 2011 SP1,
and the SAP hotfix for Softimage 2011 Subscription Advantage Pack.
As far as I can tell from the readme:
this Hotfix more or less replaces Hotfix 1,
as "(a)lso included are the dll’s from HOTFIX 1"
second update: it seems the Hotfix 2 for SAP can NOW be downloaded from the Subscription Center...