Hibernate version: 2.1.6

Now... I have tried mapping a generator-class of either "identity" or "native" through XDoclet mapping file generation. When I run a schemagen ant task I get after all of the mappings seem to be processed, simply the terminating line:

BUILD FAILED: C:\Documents and Settings\Owner\My Documents\Classes\ITEC-485-001-2005S (Senior Workshop)\SECTS API Eclipse Project\ddl-schema-generate.xml:13: Schema text failed: could not instantiate id generator
Total time: 3 seconds

I have a properties file configured with a dialect of MySQL. I have the connection and drivers set up, and I have all of my mapping files generated and processing nicely. I read the other posts on the subject and I have looked over my properties file, my mappings, dialect, driver, and everything of the sort.

How do I elaborate on this and get a full stack trace? And if anyone has any idea why the id-generator is a problem, I'd appreciate some insight.

Thanks a lot.