Installing your compiler first and the OS/2 Warp Toolkit last prevents unexpected results due to environment variable changes (automatic updates to CONFIG.SYS).

To avoid a downlevel SOM Runtime installed by the VisualAge C++ 3.0 compiler, follow these steps for installation:

• Start the installation program for VisualAge C++ 3.0.

• Deselect the OS/2 Warp Toolkit entries in the installation screen and proceed with the installation.

• After completing the installation of VisualAge C++ but before restarting the system, edit CONFIG.SYS and modify the LIBPATH statement by moving x:\ IBMCPP\DLL after y:\OS2\DLL, where x is the drive where the VisualAge C++ compiler is installed and y is the drive where the OS/2 Warp operating system files are installed. This prevents the SOM Runtime installed by VisualAge C++ from overriding the SOM Runtime shipped with OS/2 Warp Version 4 or later.

• Save the modified CONFIG.SYS and restart your system.

• Install the OS/2 Toolkit and restart your system.