hello GOG community, I'm having trouble installing Rebel Galaxy and wonder if you can help me figure out what's going on.

I just bought games from GOG for the first time: Limbo and Rebel Galaxy. Limbo downloaded, installed, and launched just fine, but when I tried to install Rebel Galaxy the installer encountered an error. I re-downloaded RG using the GOG downloader to try to rule out any problems with the download itself, but the same thing happened: I get to the "Writing files" stage of the installer, then it stops and tells me "The installation failed. The Installer encountered an error that caused the installation to fail. Contact the software manufacturer for assistance."

I can't find any support articles about the installer. Can you help? Thanks!

Mac OSX 10.11 / 1.7Ghz i5 / 4 GB RAM / Intel HD 3000

Found this in General troubleshooting article

If you are using OS X 10.11, try first disabling the System Integrity Protection
Restart the computer, while booting hold down Command-R to boot into recovery mode.
Once booted, navigate to the "Utilities > Terminal" in the top menu bar.
Enter csrutil disable in the terminal window and hit the return key.
Restart the machine and System Integrity Protection will now be disabled.

Thanks for your help! I ended up trying to download/install through GOG Galaxy first, and that worked out fine.