[Cyberduck-trac] [Cyberduck] #3641: java.lang.ExceptionInInitializerError (org.apache.commons.logging.LogConfigurationException: No suitable Log constructor)

Cyberduck trac at trac.cyberduck.ch
Tue Oct 13 14:27:03 CEST 2009

#3641: java.lang.ExceptionInInitializerError
(org.apache.commons.logging.LogConfigurationException: No suitable Log
 Reporter:  samj    |        Owner:  dkocher   
     Type:  defect  |       Status:  closed    
 Priority:  normal  |    Milestone:            
Component:  core    |      Version:  3.2.1     
 Severity:  major   |   Resolution:  worksforme
 Keywords:          |  

Comment(by dkocher):

 Replying to [comment:8 samj]:
 > OK so the problem was that I had commons-logging-1.0.4.jar in
 /Library/Java/Extensions. Removing it allows Cyberduck to start but breaks
 other Java applications on my system. I did find however that downloading
 log4j from http://logging.apache.org/log4j/1.2/index.html and installing
 both commons-logging-1.0.4.jar and log4j-1.2.15.jar into
 /Library/Java/Extensions. That is to say it appears to be ok if you have
 commons-logging in your Java path provided you also have log4j?

 Thanks for your anlysis on this. Commons-Logging is known for its problems
 with different classloaders and its dynamic lookup of log implementations.
 It might act differently if you place a newer version of commons-logging
 jar into the Extensions directory.

 > Note that it's a difficult problem to diagnose - initially Cyberduck
 would just crash on launch but then more recent versions I could see e.g.
 Amazon S3 connections but attempts to open them were silently ignored
 (unless I opened a terminal, ran
 /Applications/Cyberduck.app/Contents/MacOS/Cyberduck directly and watched
 for the errors on the command line. As I said, not a Java guru but I do
 wonder whether this condition couldn't be better handled (e.g. with a
 sensible error?).

 Yes, we would need to catch these runtime exceptions which we currently do
 not as they are usually recoverable from.

Ticket URL: <http://trac.cyberduck.ch/ticket/3641#comment:9>
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