Kepler

I have a large workflow (both.xml) that seems to be generating these errors:

Unable to parse the MetaData: null

The selected Entity in momol cound't [sic] be found

Error encountered in: <property name="endpoint" class="ptolemy.kernel.util.StringAttribute" value="http://ecogrid.ecoinformatics.org/knb/services/QueryService">
null

The error is not always the same, and is sometimes one and sometimes another. It seems to occur more frequently under 1.x dev than under 1.0.0. Running Kepler after cleaning the cache or switching between 1.0.0 and trunk seems to sometimes but not always trigger it. The problem seems to be diminished on linux but does seem to occur. Running Kepler with -Dmax=1024m does not seem to fix the problem in Windows, but seems to help in linux.

Separating the composite actors into individual workflows, rain.xml and buffalo.xml, seems to isolate the errors to buffalo.xml, but seems to make them less consistent and more intermittent.

Some of the buffalo data is publicly accessible and some is not, so the example workflows will generate permission errors. The workflows do point only to the accessible tables and should run, but the errors are thrown, regardless.

In addition, while investigating, I have been inconsistently getting startup errors under Windows. I suspect they might be due to my starting Kepler too soon after closing it, after it returns to the command prompt but before it truly closes. One error is about failing to parse -kepler. I seem to recall this may have something to do with Kepler not being able to open some database or other, but there are no other instances of Kepler visibly open this time.

I have also seen an error on startup about the user library not being available.