“INVALID_QUERY_FILTER_OPERATOR” error while syncing cases on JIRA

Hello experts.
I have changed my 'Case' label to 'Ticket' in Salesforce. We are trying to use the JIRA plugin for addition.
When use the label 'Case', I am able to sync my cases to JIRA. However, when I use the label 'Ticket' in Salesforce for every field, it still syncs, but produces an error in the 'Salesforce Case'. See below:
Error: ( Customware-CRM-plugin ). Error message from Salesforce.com : INVALID_QUERY_FILTER_OPERATOR : Subject, OwnerId from Case where id = '00001610' ^ ERROR at Row:1:Column:71 invalid ID field: 00001610

Please help me solve this.
Thanks a lot!
