Exception trying to preview report

[rtumminelli]

Hello, everything was working perfectly with my Jasper Report. Today, when I launched Jasper Studio and tried to preview my report, i get the following exception:

net.sf.jasperreports.engine.JRRuntimeException: net.sf.jasperreports.engine.JRException: java.io.IOException: Stream Closed
 

[joseng62]

Hi rtumminelli, 
The given error you share may be anything io related. Harddrives, permissions, file locations, workspace might be missing etc. 
Best is the check the official log files for more detialed stack traces.
1) When the Execption is raised in the studio and exepction dialog box is displayed, which gives you the last stack trace.
When you click on the Details button the whole stack stace is supplied, maybe share the whole stack trace ?

2) The jasperstudio is build on a eclipse IDE and your may scruitinised the IDE log file to obtain possible additional information.
Below is an example of where Eclipse log file may be found. 
I may confirm that option 1 work for me. 
C:Users<myusername>JaspersoftWorkspace.metadata/.log

Eclipse Log File can be read by,

1. Eclipse Log File Location is: <workspace_location>/.metadata/.log
2. In Eclipse IDE: Window -> Show View -> Other -> General -> Error Log
3. In Eclipse IDE: Help -> About Eclipse -> Installation Details -> Configuration -> View Error Log

Hope this assist your troubleshooting !
Best of luck.