When I recompile my IAR project and return to the Studio window, I get the "Objectfile has changed, reload?" prompt as expected. If I say yes to this, the Studio source code windows update to show the new project, but the file is not downloaded to the target (Mega128) - I get a momentary blip on the JTAG ICE activity LED, then nothing... If I then try to manually reload the project, I get the "Could not connect to JTAG ICE" error message, and the only way to get the ICE talking again is to cycle its power. On the other hand, if I say no to the initial reload prompt and then manually reload the project, it works just fine.