Can't edit data set. NullPointerException

rbguy

<p>Hello,</p><p> I’m really hoping I don’t have to start all over with this report.  Here's the deal:</p><p>I created a report that is somewhat complex and has several computed columns.  I got this report running and it has been deployed and working fine for about a month now. </p><p> </p><p> A new requirement recently came in for this report that requires I add another computer column.</p><p>The problem is, when I pull up the Data Set editor now and click on the "Computed Columns" I get a message saying that “An error has occurred.  See error log for more details.  Java.lang.NullPonterException.”</p><p>In fact,  I can’t do anything with this Data Set.. No Preview Results, no Filters, no editing the SQL Query.. Everything gives me the null pointer exception. </p><p> </p><p>I tested out my SQL in SQLPlus and it’s working fine.</p><p>Attached is the full error message from the log file.</p><p> </p><p>Any ideas on what might be going on and how to fix this without starting from scratch?</p><p>Thanks!</p>

kclark

<p>What version of BIRT are you using and are you on windows or linux?  In the past with Linux I've had problems like these where the solution was as simple as restarting eclipse, I had to reinstall the BIRT plugin once too.  You also might attempt making a copy of the report and then copying it into a project in a new workspace.</p>