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Forrest Rae commented on OFBIZ-6218: ------------------------------------ It's very likely that these strange errors are related to groovy scripts throwing exceptions that don't have error messages. One strong possibility is java.util.ConcurrentModificationException. I ran into this issue and ended up tracking it down to the lack of exception reporting in the GroovyScriptEngine: OFBIZ-6888. > Unit tests throw exception in DBCP > ---------------------------------- > > Key: OFBIZ-6218 > URL: https://issues.apache.org/jira/browse/OFBIZ-6218 > Project: OFBiz > Issue Type: Bug > Reporter: Adrian Crum > Attachments: OFBIZ-6218.patch > > > Details in comments. -- This message was sent by Atlassian JIRA (v6.3.4#6332)