Unable to change group for /opt to rvm

[emachnic]

Summary

On a fresh OSX 10.8.3, I tried to run Railsinstaller but the installer was unable to change the group for /opt

Expected behavior

I expected the installer to just finish properly like usual

Actual behavior

I received an error that the installer was unable to change the group for /opt to "rvm"

Steps to reproduce

• Use a fresh computer with 10.8.3; user has admin permissions
  • Ensure Homebrew is not installed
• Download http://railsinstaller.s3.amazonaws.com/RailsInstaller-1.0.4-osx-10.7.app.tgz
• Unzip and run the installer
• Installer should fail when trying to modify the group

[rollercomsolutions]

I Second This!

[Albert-Liu]

Perhaps a hint at the cause or a workaround, I wrote at

https://groups.google.com/forum/#!msg/railsinstaller/J4_8prZHoVU/S1nfw3IciSMJ

Whatever the installer is doing (and/or perhaps a problem with OSX, 10.8.3 on my system), I encountered the following on the command line:

$ sudo chgrp rvm /opt/rix
chgrp: rvm: illegal group name

I was able to use the group id number to change successfully. (The group id will most likely differ by system; I looked mine up using dscl.)
After which, the install succeeded.

A system reboot did allow chgrp rvm at the command line to work.

[jlynch80]

I did a clean install of OS X 10.8.3 Mountain Lion. I had this same issue. I installed Xcode and it's CLI tools. Did a restart, now all is well. Install went fine. Thanks.

[macropin]

A system reboot did allow chgrp rvm at the command line to work.

Yes, that is what was required here as well.

[ghost]

Worked great, thanks for posting a solution. Got the error on a newly installed 1.8.3. Installed Xcode, restarted, ran the chgrp command line command, ran the rails installer.

[bayendor]

Encountered the same problem. Had to restart Mac twice, then installer ran fine.

On another install with the same issue I ran fix permissions, which corrected a whole slew of improper file ownerships. Installer then ran fine.

[lafber]

Same here.

Fiw it by giving my user admin right (not sure it was part of the fix), reboot and installer works. Weird.

[chadalderson]

Same here. Had a fresh copy of OS X 10.8.4 and got the following error during install: http://d.pr/i/bbte - installed Xcode, rebooted and it worked.