If you are trying to run from source, then make sure to build the source. Type 'ant' from the top level directory into which you have downloaded the source. I assume you are familiar with 'Ant' etc
If you are running from released bits, I cannot see how you can get this error. Make sure you are in the directory where you have downloaded Nutch bits to before running the command "bin/nutch....." This is all I can suggest for the moment given the information you provided -----Original Message----- From: Yavuz Selim YILMAZ [mailto:yvzslmyilm...@gmail.com] Sent: Tuesday, September 07, 2010 10:42 AM To: user@nutch.apache.org Subject: Cygwin Hi all, When I try to crawl with the cygwin bin/nutch urls -dir crawl -depth -2 I got such errors; Exception in thread "main" java.lang.NoClassDefFoundError: nutch Caused by: java.lang.NotFoundException: nutch at java.net.URLClassLoader$1.run(URLClassLoader.java:202) ... .. .. Could not find the main class: nutch. Program will exit. Any suggesiton? -- Yavuz Selim YILMAZ