The following issues have been resolved in Autodesk AutoCAD Civil 3D 2015 Service Pack 1:

Corridor Modeling and Analysis

• A data-specific issue has been resolved where attempting to rebuild a corridor would cause the application to close unexpectedly.
• An issue has been resolved where material take off would compute only half of the areas of the materials when more than one baseline existed.
• An issue has been resolved where the corridor feature line areas were not using the code set styles assigned to the corridor.
• An issue has been resolved where the elevation target in the DaylightBasin and DaylightBasin 2 subassemblies was incorrectly solving for the basin elevation.
• An issue has been resolved where the German Country Kit assembly GermanSA_Fahrbahn_ausserorts was missing the feature line on the right side in a cut terrain situation.

Pipe Networks and Pressure Networks

• An issue has been resolved where data-referenced gravity pipe network styles were reset when the source model was updated and the network was synchronized.
• An issue has been resolved where data-referenced pressure network styles were reset when the source model was updated and the network was synchronized.
• An issue has been resolved where pressure networks were not created properly when using the Create Pressure Network from Industry Model command.
• An issue has been resolved where an invalid part and/or pipe style within a pipe network would cause the application to close unexpectedly.
  

Alignments and Profiles

• An issue has been resolved where editing an alignment when another profile had been superimposed onto its profile would cause the application to close unexpectedly.
• An issue has been resolved regarding the adjustment of the profile station range when creating a profile after creating and deleting an unrelated alignment.

Survey

• A utility which provides the ability to save an AutoCAD Civil 3D 2015 survey database for use in AutoCAD Civil 3D 2014 is included in this service pack. This utility can be accessed from the AutoCAD Civil 3D Toolbox after installing this service pack.
• An issue has been resolved where attempting to delete a survey figure from the Figures Editor would cause the application to close unexpectedly.

Grading and Surfaces

• An issue has been resolved where deleting all grading projections and repeatedly running the UNDO command would cause the application to close unexpectedly.
• An issue has been resolved where deleting points from a surface when the DACH Extension is installed would cause the application to close unexpectedly.
• An issue has been resolved where draped images that were rendered when hardware acceleration was turned on would be mirrored.
  

Miscellaneous

• An issue has been resolved where a description was not included from a data-referenced source object.
• An issue has been resolved where unexpected characters and text was added to objects in a drawing and within any drawings that were opened during the AutoCAD Civil 3D session.
• An issue has been resolved where starting AutoCAD Civil 3D in zero document state startup mode would cause the application to close unexpectedly.
• An issue has been resolved where the correct CODES file was not being read from the registry.
• An issue has been resolved where modifying an object on a locked layer would cause the application to close unexpectedly.
• An issue has been resolved where a curve label would show its content reversed when located at 0 and 180 degrees in a drawing.
• An issue has been resolved where the Print button in the Hydraflow Express Rainfall IDF Curve dialog box would not work properly.