truecrypt 7.1a requires Mac OS X 10.4 or later on Yosemite 10.10 After reading articles about the state of Truecrypt in February 2015, I decided to download the last stable version of Truecrypt that allows full usage of Truecrypt: that is, version 7.1a


  7.2 version that can only be used to view, but no longer to create new, TrueCrypt volumes.


see https://www.grc.com/misc/truecrypt/truecrypt.htm

I then proceeded to install this on my Mac, running on Yosemite 10.10

But I got the error message "truecrypt 7.1a requires  Mac OS X 10.4 or later", see below.



I guess it's simply a schoolboy error from a developer of the Truecrypt team, as it considers 10.4 being above 10.10, or maybe it's rather Apple who messed up &amp; should have consistantly used 2 digits after the dot (i.e. use 10.04 rather than 10.4).

In any case, I find myself unable to install Truecrypt. Anyone found a solution for this?
Copy the mpkg from inside the downloaded disk image onto your Desktop.
Right click the mpkg file and choose Show Package Contents, then open the Contents folder.
Open distribution.dist with a text editor.
Remove lines 13 to 18.


Save the file and open the mpkg normally.