There are some common tips I can give you for your various software's installing:
- If the setup file is .exe file, I strongly recommend you use "run as administrator" on the context menu to execute it.
- If the setup file is .msi file, I strongly recommend you make a bat file contains the command line msiexec /i "[setup file path]", then run the bat file with "run as administrator" on the context menu.
- Maybe when you install some add-ons for Visual Studio 2005 you'll meet an error message "Visual studio 2005 has stopped working...", never mind it please click Cancel button directly on the messagebox, then it will show a new messagebox ask you would debug or close the program, you MUST click the Debug button then the installing succeed, if you click the Close button the installing will failed, it's very special but true.
These tips can't fix all but most possible problems, any way, I still recommend you should better check the install log furthermore.
Hope this post helps.