sub task created error

[Soft Admin]

After I upgrade to JIRA 6.2,I got a error when I created a sub task at one of project, but created on the other project is fine. I also upload the error message here.(jira_error.txt)

Thanks

ERNIE

[Nic Brough -Adaptavist- · Accepted solution]

The Gantt chart plugin is causing a problem according to that stack trace. Try removing it and re-testing to confirm it and get back to us.

[Soft Admin]

Dear Nic

After I uninstall the Gantt chart plugin,the sub-task is success to be created.How can I do next step,because we buy the licence to use Gantt chart plugin.

Thanks for reply
ERNIE

[Nic Brough -Adaptavist-]

I think you need support from the vendor to work out what is breaking, potentially it's a bug in the product.