I am running WIndows XP professional SP3, I have CCS Version 3.3 installed. I am trying to also install CCS Version 4.0, the free microcontroller edition. The installation is crashing after XDS560 installation step is completed. In other installation attempts, I have turned off the XDS560 installation step, and turned off MSP430 installation. It still crashes at the same installation point with an error. The Application Error pop up window pops up, and the text inside the window is "Error: Error in Action ExecuteAction". This error message is repeated three times in the pop-up window. There is no normal recovery from this window, and task manager must be used to cancel the installation of the CCS4. I have also deleted the CCS installation directory under program files, which did not help later installation attempts. There is nothing referring to CCS4.0 in my add/ remove programs window, nor in the start->All Programs menu items . Any suggestions?