NullPointerException occurs when editing issue - related to 'GreenHopper Released Version History' field

@400000004f45c7530fe9a96c 2012-02-23 01:57:45,265 TP-Processor10 ERROR sysadmin 117x11680x1 evyd4p 59.167.133.99,207.223.247.46 /secure/QuickEditIssue.jspa [jira.bc.issue.DefaultIssueService] Exception occurred editing issue: java.lang.NullPointerException
@400000004f45c7530fe9b13c java.lang.NullPointerException
@400000004f45c7530fe9b524       at java.util.AbstractCollection.addAll(AbstractCollection.java:303)
@400000004f45c7530fe9b524       at com.pyxis.greenhopper.jira.customfields.ReleasedVersionHistoryCFType.updateValue(ReleasedVersionHistoryCFType.java:68)
@400000004f45c7530fed04cc       at com.pyxis.greenhopper.jira.customfields.ReleasedVersionHistoryCFType.updateValue(ReleasedVersionHistoryCFType.java:25)
@400000004f45c7530fed08b4       at com.atlassian.jira.issue.fields.CustomFieldImpl.updateValue(CustomFieldImpl.java:405)
@400000004f45c7530fed08b4       at com.atlassian.jira.issue.fields.CustomFieldImpl.updateValue(CustomFieldImpl.java:366)
@400000004f45c7530fed146c       at com.atlassian.jira.issue.managers.DefaultIssueManager.updateFieldValues(DefaultIssueManager.java:589)
@400000004f45c7530fed146c       at com.atlassian.jira.issue.managers.DefaultIssueManager.updateIssue(DefaultIssueManager.java:554)
@400000004f45c7530fed1854       at com.atlassian.jira.bc.issue.DefaultIssueService.update(DefaultIssueService.java:272)
@400000004f45c7530fed27f4       at com.atlassian.jira.bc.issue.DefaultIssueService.update(DefaultIssueService.java:246)
@400000004f45c7530fed2bdc       at sun.reflect.GeneratedMethodAccessor1929.invoke(Unknown Source)
@400000004f45c7530fed2bdc       at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
@400000004f45c7530fed2fc4       at java.lang.reflect.Method.invoke(Method.java:597)
@400000004f45c7530fed33ac       at com.atlassian.multitenant.impl.MultiTenantComponentFactoryImpl$AbstractMultiTenantAwareInvocationHandler.invokeInternal(MultiTenantComponentFactoryImpl.java:181)
@400000004f45c7530fed3794       at com.atlassian.multitenant.impl.MultiTenantComponentFactoryImpl$MultiTenantAwareInvocationHandler.invoke(MultiTenantComponentFactoryImpl.java:211)
@400000004f45c7530fed3b7c       at $Proxy298.update(Unknown Source)
@400000004f45c7530fed3b7c       at sun.reflect.GeneratedMethodAccessor1929.invoke(Unknown Source)
@400000004f45c7530fed434c       at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
@400000004f45c7530fed434c       at java.lang.reflect.Method.invoke(Method.java:597)
@400000004f45c7530fed4734       at com.atlassian.plugin.osgi.hostcomponents.impl.DefaultComponentRegistrar$ContextClassLoaderSettingInvocationHandler.invoke(DefaultComponentRegistrar.java:129)
@400000004f45c7530fed4f04       at $Proxy298.update(Unknown Source)
@400000004f45c7530fed52ec       at sun.reflect.GeneratedMethodAccessor1929.invoke(Unknown Source)
@400000004f45c7530fed52ec       at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
@400000004f45c7530fed56d4       at java.lang.reflect.Method.invoke(Method.java:597)
@400000004f45c7530fed5abc       at com.atlassian.plugin.osgi.bridge.external.HostComponentFactoryBean$DynamicServiceInvocationHandler.invoke(HostComponentFactoryBean.java:154)
@400000004f45c7530fed5ea4       at $Proxy298.update(Unknown Source)
@400000004f45c7530fed5ea4       at com.atlassian.jira.quickedit.action.QuickEditIssue.doExecute(QuickEditIssue.java:128)
@400000004f45c7530fed628c       at webwork.action.ActionSupport.execute(ActionSupport.java:165)
@400000004f45c7530fed79fc       at com.atlassian.jira.action.JiraActionSupport.execute(JiraActionSupport.java:82)
@400000004f45c7530fed79fc       at webwork.interceptor.DefaultInterceptorChain.proceed(DefaultInterceptorChain.java:39)
@400000004f45c7530fed7de4       at webwork.interceptor.NestedInterceptorChain.proceed(NestedInterceptorChain.java:31)
@400000004f45c7530fed7de4       at webwork.interceptor.ChainedInterceptor.intercept(ChainedInterceptor.java:16)
@400000004f45c7530fed85b4       at webwork.interceptor.DefaultInterceptorChain.proceed(DefaultInterceptorChain.java:35)
@400000004f45c7530fed916c       at webwork.dispatcher.GenericDispatcher.executeAction(GenericDispatcher.java:205)
@400000004f45c7530fed916c       at webwork.dispatcher.GenericDispatcher.executeAction(GenericDispatcher.java:143)
@400000004f45c7530fed9554       at com.atlassian.jira.web.dispatcher.JiraWebworkActionDispatcher.service(JiraWebworkActionDispatcher.java:152)
@400000004f45c7530fed993c       at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
@400000004f45c7530fed9d24       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
@400000004f45c7530feda10c       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
@400000004f45c7530feda10c       at com.atlassian.jira.web.filters.steps.ChainedFilterStepRunner.doFilter(ChainedFilterStepRunner.java:78)
@400000004f45c7530feda4f4       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
@400000004f45c7530feda8dc       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
@400000004f45c7530fedacc4       at com.atlassian.core.filters.HeaderSanitisingFilter.doFilter(HeaderSanitisingFilter.java:44)
@400000004f45c7530fedacc4       at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
@400000004f45c7530fedb87c       at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
@400000004f45c7530fedb87c       at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:46)
@400000004f45c7530fedbc64       at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter$1.doFilter(DelegatingPluginFilter.java:66)
@400000004f45c7530fedbc64       at com.atlassian.applinks.core.rest.context.ContextFilter.doFilter(ContextFilter.java:25)
@400000004f45c7530fedc81c       at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter.doFilter(DelegatingPluginFilter.java:74)
@400000004f45c7530fedc81c       at com.atlassian.plugin.servlet.filter.IteratingFilterChain.doFilter(IteratingFilterChain.java:42)
@400000004f45c7530fedcc04       at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter$1.doFilter(DelegatingPluginFilter.java:66)
@400000004f45c7530fedcc04       at com.atlassian.agmp.integration.jira.ReprovisionConfigFilter.doFilter(ReprovisionConfigFilter.java:87)
@400000004f45c7530fedd3d4       at com.atlassian.plugin.servlet.filter.DelegatingPluginFilter.doFilter(DelegatingPluginFilter.java:74)