No text in message box

In the interest of full disclosure, I am not a programmer and I'm learning C# on the fly (and don't know much yet). I took over a job in which I must use a custom application coded in C#. Part of my job entails troubleshooting the custom application. (By the way, they knew when they hired me that I didn't know programming). I've purchased a couple of books and I'll be taking an online C# class starting next week. However, I'm in need of some quick assistance. I have a try-catch statement in which the catch calls (this might not be the right terminology) a message box that is supposed to display an error message. When I run the code, the error is obviously being caught because the message box displays. However the error does not display. I end up with a blank message box that includes a blank OK button. However, the title bar displays. The try-catch statement is as follows: try { if (Directory.Exists(dir)==true) { files.DeleteFilesInDir(dir,"*.*"); if (Directory.Exists(dir)==true) files.DeleteFilesInDir(dir+@"040\","*.*"); if (Directory.Exists(dir)==true) files.DeleteFilesInDir(dir+@"5500\","*.*"); if (Directory.Exists(dir)==true) files.DeleteFilesInDir(dir+@"2100\","*.*"); if (Directory.Exists(dir)==true) files.DeleteFilesInDir(dir+@"2604\","*.*"); } else Directory.CreateDirectory(dir); } catch { MessageBox.Show("An error occurred while creating or clearing the installation directory"+"\n"+"Adapt will not be installed.","InstallAdapt.exe"); return; } MODE="RUN"; } I've changed the entire message within the parens to just "hi" thinking that maybe the syntax was incorrect, but I still ended up with an empty message box. The only difference was the message box was smaller. So it recognizes the size of the message. Any suggestions?