Bob... four things...1. I wish everyone would use the forum's *code* tags to keep the XML script formatted.2. This stupid *$(@) forum software must use < Script> as a keyword or something, 'cause it keeps forcing it into a lower case "s"......so, I don't really know if #3 is really a mistake, or it's just an artifact from the silly forum software! It's something to keep in mind though. I've place a blank space between the < and S, so remove it before use!3. Copy/Pasting your code into my Visual Studio IDE, the "smartsense" found the error in about 0.3 seconds. It was, as I surmised a very simple error, but one that's easily overlooked. The <script> tag should have been <Script>... Capitalization is a killer in the FSX XML Schema! :( 4. On examining the FSX SDK closer, I believe the correct format for your <Tooltip... should be:

<Tooltip "Toggle FMS CDU"/>

Hi Bill. Thanks for the help. I'll have to look into the forum's *code* tags. I do not know how to use it. I'll check it out.Is the Visual Studio IDE a free program or a pay program? It looks like I should have it.I'll try your attached change. Thanks a lot for all the help. I really do appreciate it. Best regards, Bob.

Hi Bill. Thanks for the help. I'll have to look into the forum's *code* tags. I do not know how to use it. I'll check it out.Is the Visual Studio IDE a free program or a pay program? It looks like I should have it.I'll try your attached change. Thanks a lot for all the help. I really do appreciate it. Best regards, Bob.

Bob, the "Wrap in code tags" is the last little icon in the header. It looks like a piece of paper rolling out of a green something or another... ;)Visual Studio 2005 is definitely not free, but it will allow me to work in C, C++, C#, Visual Basic, XML, etc. It is a veritable "Swiss Army Knife" of a programmer's tools.However, MS Visual Express 2010 (beta2) is free, and will allow one to program in C/C++, and does include the same XML Editor that my "Professional" version has: Basic XML Editor (code coloring and IntelliSense)http://www.microsoft.com/express/Downloads/#2010-Visual-CPP

Bob, the "Wrap in code tags" is the last little icon in the header. It looks like a piece of paper rolling out of a green something or another... ;)Visual Studio 2005 is definitely not free, but it will allow me to work in C, C++, C#, Visual Basic, XML, etc. It is a veritable "Swiss Army Knife" of a programmer's tools.However, MS Visual Express 2010 (beta2) is free, and will allow one to program in C/C++, and does include the same XML Editor that my "Professional" version has: Basic XML Editor (code coloring and IntelliSense)http://www.microsoft.com/express/Downloads/#2010-Visual-CPP

Hi Bill. Thanks for all the info. I'll use the code tags and get the Visual Express 2010 (beta2). Best regards, Bob.