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.

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.

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.