In iReport Designer options, the path to PDF Viewer is set to be "C:Program Files (x86)AdobeReader 11.0ReaderAcroRd32.exe" (without quotes). But when I run any report with PDF Preview enabled, I get following error; Executing: C:Program Files (x86)AdobeReader 11.0ReaderAcroRd32.exe "Y:BikramShresthaJasper 3.7.0Rpt1515D.pdf" Error viewing report... java.io.IOException: Cannot run program "C:Program": CreateProcess error=2, The system cannot find the file specified at java.lang.ProcessBuilder.start(Unknown Source) at java.lang.Runtime.exec(Unknown Source) at java.lang.Runtime.exec(Unknown Source) at java.lang.Runtime.exec(Unknown Source) at com.jaspersoft.ireport.designer.compiler.IReportCompiler.run(IReportCompiler.java:1240) at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:572) at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:997) Caused by: java.io.IOException: CreateProcess error=2, The system cannot find the file specified at java.lang.ProcessImpl.create(Native Method) at java.lang.ProcessImpl.(Unknown Source) at java.lang.ProcessImpl.start(Unknown Source) ... 7 more It seems like the path given for Adobe Acrobat Reader gets truncated after the space character. However, the internal preview for pdf works from within the iReport designer. Has anyone encountered similar problem? Any suggestions?