Quote Originally Posted by jderson View Post
"MicroCode Studio is unable to locate 'DT Hello World.hex'. Do you want to compile and assemble 'DT Hello World.pbp' now?"
So it must know where Hello World is. It can't find the hex file...ok...it didn't compile fully the last time, and therefore didn't produce a .hex file.

When I answer yes, it appears to compile, but the ME Labs U2 programmer window does not come up.
The U2 programmer (or any other programmer) is an add-on to MCS and must be configured as such, either with the correct command line or at least with the correct options in MCS.

If the file compiled with errors in MCS, you would see other error messages at the bottom of the MCS screen, and most likely, if you think the error has something to do with the instant interrupts, the error would most likely have the words 'instant interrupts' in it.
But you didn't say anything about that, so I think I can safely assume you haven't connected MCS to the programmer correctly as of yet.
Or were there more errors?