Surveys created in v2.0.2 doesn't work in v. 3.0.2

After upgrade to 3.0.2 surveys section throws exception:

com.thoughtworks.xstream.converters.ConversionException: java.util.Collections-SynchronizedMap : java.util.Collections-SynchronizedMap ---- Debugging information ---- message : java.util.Collections-SynchronizedMap cause-exception : com.thoughtworks.xstream.mapper.CannotResolveClassException cause-message : java.util.Collections-SynchronizedMap class : com.adaptavist.confluence.survey.model.Survey required-type : com.adaptavist.confluence.survey.model.Survey converter-type : com.thoughtworks.xstream.converters.reflection.ReflectionConverter path : /com.adaptavist.confluence.survey.model.Survey/sections line number : 7 version : not available -------------------------------
at com.thoughtworks.xstream.core.TreeUnmarshaller.convert(

caused by: com.thoughtworks.xstream.mapper.CannotResolveClassException: java.util.Collections-SynchronizedMap
at com.thoughtworks.xstream.mapper.DefaultMapper.realClass(

I've able to workaround this issue by downgrading x-stream lib from 1.4.5 to 1.2

Is it safe way to deal with the problem?

1 answer

1 accepted

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Hi Alexander,

We have already developed a patch for this issue and it will be tested and released to the MarketPlace during the following weeks.

Unfortunately this workaround will not cover every possible scenario so in case you have specific needs, please get in touch with us via our contact-us form ( and our support team will be happy to deal with your query.

Thanks and apologies for any inconvenience caused.

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