[MacPorts] #19590: selfupdate fails

[MacPorts]

#19590: selfupdate fails
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 Reporter:  ali_kaylan@…            |       Owner:  macports-tickets@…                   
     Type:  defect                  |      Status:  new                                  
 Priority:  Normal                  |   Milestone:                                       
Component:  base                    |     Version:  1.7.0                                
 Keywords:  "unknown group" 501     |        Port:                                       
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Comment(by nate@…):

 I had the same problem and `chgrp -R admin /opt/local` worked for me.
 Thanks!

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Ticket URL: <http://trac.macports.org/ticket/19590#comment:8>
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