We are using JIRA with a professional open source license. We also have available to us an Enterprise open source license. It would be great to move to this license and make use of the additional features. However when we install the enterprise license, we get many 'unsupported feature' exceptions in the in catalina log and also get a bunch of exception messages on the screen. It may make sense to tackle this when the new version of Jira is released thi summer.