I've have several "old versions" lurking somewhere.

Using Arduino IDE 1.x
1

Hi,

This problem is as old a as my first installation of 1.6.5 in my Mac OS X System.
This is what I get every time i make a successful build and installation:

Verify successful
Set boot flash true
CPU reset.
Invalid version found: version 2013-07-07-17:51
Invalid version found: version 2013-07-07-17:51

Reinstallation of the 1.6.5 dosen't help! I've tried it!!

Please help!
/John

2

A bunch of people have had IDE 1.6.x problems, including IDE crashes and bizarre compile errors, when they have an old 1.5.x/1.6.x installation. Those problems seem to be caused by out-of-date executables that the new IDE saves outside the IDE installation directory. In such cases it appears that the fix is to delete or rename the old "Arduino15" directory and re-install 1.6.x.

On Mac OS X:
/Users/(username)/Library/Arduino15

On Windows:
C:\Users(username)\AppData\Roaming\Arduino15

On Linux:
/home/(username)/.arduino15 (a.k.a. ~/.arduino15)