JAR files will not be signed. The keystore.properties file cannot be found, or does not contain the required properties. (to suppress this message, enable the quiet option: -quiet, -q) Follow these instructions to enable JAR file signing: 1. Create a plain text file named 'keystore.properties' in the World Wind project root folder. 2. Give the file 'keystore.properties' the following contents: keystore.file=[myKeystore] keystore.alias=[myAlais] keystore.storepass=[myPassword] keystore.tsaurl=[URL for timestamp authority] 3. If you don't have a keystore, you can create a temporary one as follows (use [myPassword] as the password): keytool -genkey -Keystore ./[myKeystore] -alias [myAlias] keytool -selfcert -Keystore ./[myKeystore] -alias [myAlias] For help with keystores or signing JAR files, see http://java.sun.com/j2se/1.5.0/docs/guide/security/SecurityToolsSummary.html