Follow these guidelines if you are installing SDK on the same machine with other Sybase products:
On Microsoft Windows, installing SDK 15.5 on the same machine as Adaptive Server 15.0.x could cause Adaptive Server to fail to start. To configure this configuration, either upgrade Adaptive Server to 15.5, or follow the directions in the Software Developers Kit and Open Server Installation Guide for Microsoft Windows.
On Microsoft Windows, use .bat files to ensure that each product is started using the correct SDK version and environment variables.