can't upload anything to arduino

Projects Programming
1

hi
after finally getting the arduino software to work i can't upload anything.
i always get the error as shown in the attachment.
anyone any idea how to fix this?

arduino upload error.png
arduino upload error.png1280×1024 75.2 KB

2

Make sure the correct board is selected in the IDE. What unit do you have?

3

i have the arduino UNO

4

anyone any idea how to fix this?

How about following the directions at the top of the error message window?