Another weird one. Where in OpenProgramFile() do I call GetAppId()?

Env64: True EnvInstalled: True

System.ArgumentException: The path is not of a legal form. at System.IO.Path.NormalizePathFast(String path, Boolean fullCheck) at System.IO.Path.GetFullPath(String path) at System.Diagnostics.FileVersionInfo.GetFullPathWithAssert(String fileName) at System.Diagnostics.FileVersionInfo.GetVersionInfo(String fileName) at T7ECommon.Common.GetAppIdForProgramFile(String programFilePath) at T7EPreferences.Primary.OpenProgramFile() at T7EPreferences.Primary.ShowStartDialog() at T7EPreferences.Program.Main()