jasper FileNotFoundException install custom report

Error while installing report in Bonita 6.5.1

Cannot install report in Bonita 6.5.1. Report is developed in iReport and is installed successfully in Bonita 6.3.1 portal.

Any suggestion/information would be helpful.

Here is the engine log:

Installing custom jasper reports fails with FileNotFoundException

Dear all,

I'm trying to install a custom jasper report in my Bonita 6.5.0 Performance installation (as described here). Unfortunately I fail at the last step of installation getting java.io.FileNotFoundException (stacktrace below).

I've catched the exception using debuging tool and found out that FileInputStream's constructor has been given file that points to directory (the 'tmp' folder). This is causing the exception as this constructor's javadoc says: