Essential build tool not found: lf95.exe

[R. T. (Fortran Man)]

The message "Essential build tool not found: lf95.exe" when I attempt to build a project. What's going on?

[Lahey Support]

This message is generated when Visual Studio can not find the file lf95.exe in the LF installation. Check for this file in the bin sub-directory of your LF installation, typically C:\Program Files\Lahey-Fujitsu Fortran\v7.1\Win32\Bin

If lf95.exe is not located in this directory run the Repair utility for LF from the Add and Remove Programs utility on your system. For instructions see "Repairing the Installation" in the online documentation.

If you've manually moved (without the install program) the LF installation from one location on the hard drive to anther it would cause this problem.