I have just recently purchased an Akai MPK49 USB MIDI Keyboard. Super exciting because I won't have to use the in-program keyboard thing in FL Studio 9.
But anyways, I have an ASUS G73jh laptop and an Acer AX1300-E desktop. The keyboard works fine with the desktop (I plug it in, the drivers and necessary things install properly and FLS 9 recognizes it fine and it works!), but this is not the case for my laptop. When I plug it into the laptop, the drivers install properly with no error and the program itself recognizes the keyboard, but it doesn't seem to work.
The keyboard shows up in the MIDI settings control panel, but when I select it or set it as master sync or anything that has to do with the keyboard, the program gives me an error: "Undefined External Error.", and it comes up more than once. ( I will post a picture)