Cannot determine program size

I have been using the 0013 and 0015 IDE( Windows and Linux) for a while to develop some sketches. Now all of a sudden I get the message in red that says "cannot determine program size". The program does compile though as well as load and run. Most of the time the error pops up but occasionally it works properly.

Is this a real problem or just a nuisance. How can I get the IDE's to run normally again?

I have uninstalled and re-installed both IDE's already with no change.


There is another active thread talking about this. It seems to be just a nuisance error thought to be caused by some race condition during the compiling process. It is being investigated but in the mean time I wouldn’t let it slow you down.


Are you using a library in your sketch?