Unable to Make Pure Java Jar

Message	Unable to make Pure Java Standalone jar.
Comments	An error occurred while creating install.jar. Make sure you have plenty of free disk space and that you have read, write, create, and delete access rights to your build directory. If you selected a directory in the File list, be sure that you only typed in extensions, not wildcards, in the extensions field. If you want to include all files in a directory, then simply select all files and leave the extensions field blank. If the details in the jex.log don't make it clear what you should do to resolve the error, please send e-mail with the jex.log file and your project file to send email to . Be sure to remove any passwords in your project file before sending it to us.
Work around	If you'd prefer not to create a Pure Java version, then you can remove the check mark from the Pure Java box on the Build panel.
See also	jex.log in your JExpress directory