Posts for Tag: mavericks

'GPG Tools for OSX Mail on Mavericks workaround'

If you use [GPGMail]( (look it up if you don't know about email privacy ;)), and migrated to OSX Mavericks preview, then you know it does not work out of the box.

Here's how to trick the operating system to make it work:

- Quit Mail; - Download and [install this fix](; - Run this sequence of commands:

$ sudo defaults write /Library/Mail/Bundles/GPGMail.mailbundle/Contents/Info.plist SupportedPluginCompatibilityUUIDs -array-add "$(grep -A 1 "PluginCompatibilityUUID" /Applications/ | grep string | cut -f 2 -d ">" | cut -f 1 -d "<")" $ sudo chown -R root:staff /Library/Mail/Bundles/GPGMail.mailbundle $ sudo chmod -R ug+r /Library/Mail/Bundles/GPGMail.mailbundle $ sudo chmod 644 /Library/Mail/Bundles/GPGMail.mailbundle/Contents/Info.plist

Keep in mind that on some shells the first command will not work (i.e. [fish]( If that's the case, first switch to another one (bash,sh,csh,zsh) then run the commands.

Restart Mail and it should work.

'OSX Mavericks "You need a Java 6 runtime to run X" error dialog fix'

Ok, so here's the deal: If you upgrade to [OSX Mavericks](, only had JAVA 7 installed, and try to run anything that requires JAVA you will probably get a nice dialog like this one:

All my attempts to make Mavericks use JAVA 7 instead have failed so i tried the next best thing: Install JAVA 6. Since you can't find JAVA 6 for Mac at the [Oracle]( site, you'll have to install it from here: [Java for OS X 2013-004](

After installing you'll end up with this following structure at the "/System/Library/Frameworks/JavaVM.framework/Versions" folder:

drwxr-xr-x 11 root wheel 374 29 Ago 14: lrwxr-xr-x 1 root wheel 10 29 Ago 14:58 1.4@ -> CurrentJDK lrwxr-xr-x 1 root wheel 10 29 Ago 14:58 1.4.2@ -> CurrentJDK lrwxr-xr-x 1 root wheel 10 29 Ago 14:58 1.5@ -> CurrentJDK lrwxr-xr-x 1 root wheel 10 29 Ago 14:58 1.5.0@ -> CurrentJDK lrwxr-xr-x 1 root wheel 10 29 Ago 14:58 1.6@ -> CurrentJDK lrwxr-xr-x 1 root wheel 10 29 Ago 14:58 1.6.0@ -> CurrentJDK drwxr-xr-x 7 root wheel 238 29 Ago 14:58 A/ lrwxr-xr-x 1 root wheel 1 29 Ago 14:58 Current@ -> A lrwxr-xr-x 1 root wheel 59 29 Ago 14:58 CurrentJDK@ -> /System/Library/Java/JavaVirtualMachines/1.6.0.jdk/Contents

So you might want to fix the path to the current JDK, so that you keep using the JDK 7 by default (Eclipse users, you know what i mean ;)):

$ sudo rm CurrentJDK $ sudo ln -s /Library/Java/ $ sudo ln -s /Library/Java/JavaVirtualMachines/jdk1.7.0_25.jdk/Contents CurrentJDK

Another thing you might need to change is the JAVA_HOME environment variable but, since that depends on whatever shell you use, [Google it]( ;)

Finally, verify that you are still using JAVA 7 by default:

$ javac -version javac 1.7.0_25 $ java -version java version "1.7.0_25"

Have fun.

OSX Mavericks Developer Preview 4 boot stuck on wheel

After upgrading to the developer preview 4 I found that my mac mini does not boot with the external screen attached on the HDMI port. It starts booting and then the WindowServer crashes (no warning or anything) and the display presents the spinning symbol on the grey background forever and ever.

Just in case you are having the same problem - apparently, and according to this [link]( - you can unplug the external screen and let it boot, connecting after more or less 2 minutes (or whatever time your mac takes to boot). After that it should recognize the screen as usual.