problem starting tomee snapshot

[David Goodenough]

I am trying to run tomee on a debian sid system (amd64) using openjdk-8.
I am running a snapshot from 20150319.

Running tomee.sh without setting JAVA_HOME I get an error complaining
that /bin/java does not exist.

So I set JAVA_HOME either to /usr or to /usr/lib/jvm/java-8-openjdk-amd64/
I get:-

Exception in thread "main" java.lang.IllegalArgumentException: opt contains 
illegal character value '-'
        at 
org.apache.commons.cli.OptionValidator.validateOption(OptionValidator.java:73)
        at org.apache.commons.cli.Option.<init>(Option.java:123)
        at org.apache.commons.cli.Options.addOption(Options.java:131)
        at org.apache.commons.cli.Options.addOption(Options.java:114)
        at org.apache.openejb.cli.MainImpl.help(MainImpl.java:230)
        at org.apache.openejb.cli.MainImpl.help(MainImpl.java:212)
        at org.apache.openejb.cli.MainImpl.main(MainImpl.java:102)
        at org.apache.openejb.cli.Bootstrap.main(Bootstrap.java:106)

Any idea how to fix this?

David