After uploading content using Packager the content could not be activated. So it seems that activation does not support all possible data stored in a repository.
By the way, XML-Export of this data does not work too. To reproduce this error I can provide a package, just contact me (ralf [at] hirning.de).

The logfile says:
ERROR info.magnolia.module.workflow.jcr.JCRExpressionStore
JCRExpressionStore.java(storeExpression:90) 25.09.2006 14:26:49
store exception failed,
openwfe.org.util.beancoder.BeanCoderException: Failed to encode field named 'appliedWorkitem' of class 'openwfe.org.engine.expressions.ParticipantExpression'
at openwfe.org.util.beancoder.AbstractBeanCoder.encodeBean
(AbstractBeanCoder.java:443)
at openwfe.org.util.beancoder.XmlBeanCoder.encodeBean
(XmlBeanCoder.java:308)
at openwfe.org.util.beancoder.AbstractBeanCoder.encode
(AbstractBeanCoder.java:201)
at openwfe.org.util.beancoder.XmlBeanCoder.xmlEncode
(XmlBeanCoder.java:505)
at
info.magnolia.module.workflow.jcr.JCRExpressionStore.serializeExpression
AsXml(JCRExpressionStore.java:96)
at
info.magnolia.module.workflow.jcr.JCRExpressionStore.storeExpression
(JCRExpressionStore.java:85)
at openwfe.org.engine.impl.expool.SimpleExpressionPool.update
(SimpleExpressionPool.java:396)
at openwfe.org.engine.impl.expool.CachedExpressionPool.update
(CachedExpressionPool.java:169)
at openwfe.org.engine.expressions.AbstractFlowExpression.storeItself
(AbstractFlowExpression.java:360)
at openwfe.org.engine.expressions.ParticipantExpression.apply
(ParticipantExpression.java:409)
at openwfe.org.engine.expressions.raw.RawExpression.apply
(RawExpression.java:370)
at openwfe.org.engine.expressions.state.NormalState.apply
(NormalState.java:112)
at openwfe.org.engine.impl.expool.SimpleExpressionPool.applyOrLaunch
(SimpleExpressionPool.java:547)
at openwfe.org.engine.impl.expool.SimpleExpressionPool.apply
(SimpleExpressionPool.java:560)
at openwfe.org.engine.expressions.SequentialFlowExpression.apply
(SequentialFlowExpression.java:140)
at openwfe.org.engine.expressions.state.NormalState.apply
(NormalState.java:112)
at openwfe.org.engine.impl.expool.SimpleExpressionPool.applyOrLaunch
(SimpleExpressionPool.java:547)
at openwfe.org.engine.impl.expool.SimpleExpressionPool.apply
(SimpleExpressionPool.java:560)
at openwfe.org.engine.impl.expool.SimpleExpressionPool.apply
(SimpleExpressionPool.java:572)
at openwfe.org.engine.expressions.SequenceExpression.reply
(SequenceExpression.java:130)
at openwfe.org.engine.expressions.state.NormalState.reply
(NormalState.java:118)
at openwfe.org.engine.impl.expool.SimpleExpressionPool.reply
(SimpleExpressionPool.java:731)
at openwfe.org.engine.impl.expool.SimpleExpressionPool.replyToParent
(SimpleExpressionPool.java:662)
at
openwfe.org.engine.expressions.AbstractFlowExpression.replyToParent
(AbstractFlowExpression.java:457)
at
openwfe.org.engine.expressions.AbstractFlowExpression.applyToParent
(AbstractFlowExpression.java:472)
at openwfe.org.engine.expressions.LogExpression.apply
(LogExpression.java:153)
at openwfe.org.engine.expressions.raw.RawExpression.apply
(RawExpression.java:370)
at openwfe.org.engine.expressions.state.NormalState.apply
(NormalState.java:112)
at openwfe.org.engine.impl.expool.SimpleExpressionPool.applyOrLaunch
(SimpleExpressionPool.java:547)
at openwfe.org.engine.impl.expool.SimpleExpressionPool.apply
(SimpleExpressionPool.java:560)
at openwfe.org.engine.expressions.SequentialFlowExpression.apply
(SequentialFlowExpression.java:140)
at openwfe.org.engine.expressions.raw.RawExpression.apply
(RawExpression.java:370)
at openwfe.org.engine.expressions.state.NormalState.apply
(NormalState.java:112)
at openwfe.org.engine.impl.expool.SimpleExpressionPool.applyOrLaunch
(SimpleExpressionPool.java:547)
at openwfe.org.engine.impl.expool.SimpleExpressionPool.apply
(SimpleExpressionPool.java:560)
at openwfe.org.engine.expressions.DefineExpression.launch
(DefineExpression.java:334)
at openwfe.org.engine.expressions.raw.RawExpression.launch
(RawExpression.java:382)
at openwfe.org.engine.impl.expool.SimpleExpressionPool.applyOrLaunch
(SimpleExpressionPool.java:545)
at openwfe.org.engine.impl.expool.SimpleExpressionPool.launch
(SimpleExpressionPool.java:583)
at openwfe.org.engine.impl.launch.SimpleXmlLauncher$1.run
(SimpleXmlLauncher.java:453)
Caused by: openwfe.org.util.beancoder.BeanCoderException: Failed to encode field named 'attributes' of class 'openwfe.org.engine.workitem.InFlowWorkItem'
at openwfe.org.util.beancoder.AbstractBeanCoder.encodeBean
(AbstractBeanCoder.java:443)
at openwfe.org.util.beancoder.XmlBeanCoder.encodeBean
(XmlBeanCoder.java:308)
at openwfe.org.util.beancoder.AbstractBeanCoder.encode
(AbstractBeanCoder.java:201)
at openwfe.org.util.beancoder.XmlBeanCoder.encodeField
(XmlBeanCoder.java:391)
at openwfe.org.util.beancoder.AbstractBeanCoder.encodeBean
(AbstractBeanCoder.java:439)
... 39 more
Caused by: openwfe.org.util.beancoder.BeanCoderException: Failed to encode field named 'value' of class 'openwfe.org.engine.workitem.StringAttribute'
at openwfe.org.util.beancoder.AbstractBeanCoder.encodeBean
(AbstractBeanCoder.java:443)
at openwfe.org.util.beancoder.XmlBeanCoder.encodeBean
(XmlBeanCoder.java:308)
at openwfe.org.util.beancoder.AbstractBeanCoder.encode
(AbstractBeanCoder.java:201)
at openwfe.org.util.beancoder.AbstractBeanCoder.encodeMapEntry
(AbstractBeanCoder.java:521)
at openwfe.org.util.beancoder.AbstractBeanCoder.encodeMap
(AbstractBeanCoder.java:509)
at openwfe.org.util.beancoder.AbstractBeanCoder.encode
(AbstractBeanCoder.java:185)
at openwfe.org.util.beancoder.XmlBeanCoder.encodeField
(XmlBeanCoder.java:391)
at openwfe.org.util.beancoder.AbstractBeanCoder.encodeBean
(AbstractBeanCoder.java:439)
... 43 more
Caused by: org.jdom.IllegalDataException: The data "Can't
deactivate: : java.io.IOException: The character '' is an invalid XML character" is not legal for a JDOM character content: 0x0 is not a legal XML character.
at org.jdom.Text.setText(Text.java:188)
at org.jdom.Text.<init>(Text.java:99)
at openwfe.org.util.beancoder.XmlBeanCoder.encodePrimitive
(XmlBeanCoder.java:377)
at openwfe.org.util.beancoder.AbstractBeanCoder.encode
(AbstractBeanCoder.java:197)
at openwfe.org.util.beancoder.XmlBeanCoder.encodeField
(XmlBeanCoder.java:391)
at openwfe.org.util.beancoder.AbstractBeanCoder.encodeBean
(AbstractBeanCoder.java:439)
... 50 more