A small hot fix has been released for the following platforms:
Autodesk® Alias® 2013
Autodesk® Showcase® 2013
Autodesk® Maya® 2013
Autodesk® 3ds Max® 2013
The hot fix addresses issues in reading certain Catia files, namely CATIA V5 R21 SP2 and SP3 CATPart files and applies to Autodesk DirectConnect 2013.
If your system is not experiencing any issues then there is no need to install this hotfix.
The hotfix is available here and as always please read any readme files before installation.