Just in case anyone finds this useful - problem/workaround for installing the RSE packages for Guitar Pro 5.3 The latest version of GP installed fine on my macbook, but the RSE packages refused to install with a 'cannot write receipt' error. Switching to an administrator account, the package installs completed successfully, but then GP refused to recognise that they existed (i.e. RSE menu options permanently greyed out). After a bit of digging around, it turns out that the rse subfolder of the Guitar Pro install is incorrectly set up in the :501 rather than the :everyone group. Solution: switch to the root account (although an admin account might work here - I haven't tested it) Install GP5 open a terminal window, cd /Applications/Guitar\ Pro chown -R :everyone * Install the RSE packages switch back to normal account Start/register GP5 - RSE menus now active.