This worked fine offline in LPCXPresso 6. Now when we export the updated project in the export specifically for LPCXpresso it doesn't work offline. So as a check we have exported the old project with the new LPCXpresso export it doesn't work offline whereas the previous export in CodeRed does. {{/media/uploads/ARMedanddangerous/coderedversusxpresso.jpg}} So this leads us to think that the LPCXpresso export is broken and is a bug. Replicated in LPCXpresso 6/7/8. Outputs in LPCXpresso 6 for the old exported CodeRed project and new LPCXpresso export attached as images. [unfortunately I can't do that either as there's a bug in the image upload!] "Some files were not added to the queue: The file "coderedversusxpresso.jpg" is empty" Hhhhmmmmm... [Just uploaded in Chrome as the issue seems to be with Firefox.] Currently madly copying and pasting between the working CodeRed export that does work and the newer C files. Any help much appreciated. Richard