>> removing the build directory /tmp/org.dawnsci.base.site helped!
>> Is it possible to make buckminster (or whatever) automatically aware of any inconsistent stuff lying around there?

It is *supposed* to handle that, but a few recent reports suggest that it does not always do so.
I will change the build so that the /tmp/... is always deleted at the start of the product create.
That means it will be a little slower, but at least should always work.
I will fix that up when I get back from holidays.
Matthew

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