Studio throws Java NullPointerException when opening jobs

[humapathy]

Talend studio has started throwing Java NullPointerException errors whenever we open jobs.  Please note that we have not even started the execution of the job.  I mean even before compilation or anything we are getting this error.  Just after we doubleclick and open the job, after few seconds the attached NullPointerException opens up.  After that, we are not able to edit the job at all.  

[Anonymous]

Hi,
Could you please indicate on which build version you got this issue? What's OS and JDK version you are using?
Best regards
Sabrina

[humapathy]

Hi we are using TOS 6.2.1 and Mac OS X El Capitan 10.11.  Actually we figured out that the issue was due to one of the Repository connections connecting to our Hadoop cluster.  Every job that was referring to the Repository connection was throwing this NullPointerException as soon as we open the job.  We understand that someone might have changed the values of the Repository connection, but shouldnt the job fail only after we start running it (during compilation) rather than just throwing an exception as soon as we open it.  Note that once this happens, we are not able to run the job at all.  We created a new Repository connection and modified our jobs to use the new ones.   

[Anonymous]

Hi,
Does the  Java NullPointerException error disappear after you  creat a new Repository connection and modify your jobs to use the new ones?
Best regards
Sabrina