Unable to create the binary file, check the compilation errors

[kunwartaha007]

Hi,

My version specs: 

-Java Run Time Env:  Java 6 

-Jasper Version: 3.7.6 

- Jasper Studio Version: 6.12.2

When trying to compile a file and it gives error: "Unable to create the binary file, check the compilation errors".

This is happening on both the scenarios when I chose Compiler settings with inbuilt JasperReports version and  tried to use JasperReports version: 3.7.6  which I download from SourceForge. 

Attached is the compatilibity screenshot of my compatibilty config. 

Question 1: Where to find compilation error in Jasper Studio, is it same as Error Log?

Question 2: How do I fix this error?