IDE was working a few days ago, now it is not

Hello,

My IDE (1.6.12) was working fine up to a few days ago. Now, I cannot even compile / load even simple programs. I got the following when trying to load the analog read sketch. I am using Windows 7 64 bit.

Any ideas?

Couldn't determine program size: null
An error occurred while uploading the sketch

Strange. Please do this:

  • File > Preferences > Show verbose output during > compilation(check) > Show verbose output during > upload(check) > OK
  • Sketch > Upload
  • After the upload fails you should see a button on the right side of the orange bar "Copy error messages". Click that button.
  • Paste the output in a message here USING CODE TAGS(</> button on the toolbar).