Autodesk has released a hotfix for AutoCAD 2014
http://usa.autodesk.com/adsk/servlet/ps/dl/item?siteID=123112&id=21484847&linkID=9240618
The hotfix is crucial to install in order for IMPACT Precast 12.1 to work properly with AutoCAD 2014. Without this hotfix AutoCAD is not able to open floor plan drawings containing columns and beams.
