Access Violation at address 604966B in module OraClient8.dll

[Suhas]

I have PL SQL developer version 7.1.5.1398. Recently we upgraded to 11g. When I execute the package in test window and then try to open the output cursor I am getting this error : Access Violation at address 604966B in module OraClient8.dll Read of address 00000000
What is the reason for this error?

 

[Marco Kalter]

I think you will need to upgrade your Oracle Client version. Your Oracle8 client is not certified for 11g. If you have multiple Oracle Client versions installed, go to Tools > Preferences > Oracle / Connection to select a more recent Oracle Home from the selection list.