Unable to start new process

When i try to start a new process. I get this:

Caused by: org.jbpm.api.JbpmException: invalid transaction state: STATUS_ACTIVE
at org.jbpm.pvm.internal.tx.jta.JtaTransactionInterceptor.execute(JtaTransactionInterceptor.java:62)
at org.jbpm.pvm.internal.tx.jta.JtaRetryInterceptor.executeWithoutRetry(JtaRetryInterceptor.java:56)
at org.jbpm.pvm.internal.tx.jta.JtaRetryInterceptor.execute(JtaRetryInterceptor.java:48)
at org.jbpm.pvm.internal.svc.EnvironmentInterceptor.executeInNewEnvironment(EnvironmentInterceptor.java:53)
at org.jbpm.pvm.internal.svc.EnvironmentInterceptor.execute(EnvironmentInterceptor.java:40)
at org.jbpm.pvm.internal.id.DatabaseDbidGenerator.acquireDbidBlock(DatabaseDbidGenerator.java:76)
at org.jbpm.pvm.internal.id.DatabaseDbidGenerator.getNextId(DatabaseDbidGenerator.java:63)