I've been using a file based series in 9.1 without a problem.
I agree you need to check your OIR's
I just installed9.1 M010 and I was tweaking a couple of OIR's when i noticed after downloading Org WTDocument rulw I get this when I am looking at changing/setting a different Lifecycle.I called PTC and the tech guy told mehe gets the same thing.
<attrvalue id="lifeCycle.id" algorithm="com.ptc.core.foundation.lifecycle.server.impl.LifeCycleTemplateAttributeAlgorithm">
<arg>
Basic
</arg>
</attrvalue>
Has anyone else seen this ?
Marc