Help converting asm to hex

[Delaystomper]

Hi I am trying to convert the asm to hex on the open projext dialog box so i select and load my files on the slots and when i click build intel hex it says build done bit thrn i get a window with an error displaying : writeintelhex: file open failed.
Help please

[frank]

Check that you have write permission to the directory it is trying to write the file to.